Submission #431135

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
431135	2021-06-17T09:56:48 Z	fvogel499	Plahte (COCI17_plahte)	C++14	Compilation error	0 ms	0 KB

plahte

v#include <iostream>
#include <fstream>
#include <vector>
#include <map>
#include <unordered_map>
#include <set>
#include <algorithm>
 
using namespace std;
 
#define mp pair<pii, pii>
#define pii pair<int, int>
#define f first
#define s second
 
#define pow2 (1 << 20) // just over 1 million
#define siz 80000
 
set<pii> bt [pow2*2];
 
vector<int> graph [siz+1]; // add extra space for virtual root
set<int> colorsAtNode [siz];
int nbColours [siz]; // different colors at node rect
 
struct Event {
    Event(bool lIsRectSide, bool lIsStartSide, int lx, int lidx) {
        isRectSide = lIsRectSide;
        isStartSide = lIsStartSide;
        x = lx;
        idx = lidx;
    }
    bool isRectSide, isStartSide; // iSStartSide is only for rectangles
    int x, idx; // idx is rectangle or ball index
};
 
// used for sorting
bool sf(Event a, Event b) {
    return (a.x < b.x or (a.x == b.x and (a.isRectSide and a.isStartSide) and !b.isRectSide) or (a.x == b.x and !a.isRectSide and (b.isRectSide and !b.isStartSide)));
    // second conditions are to avoid tricky edge cases where point is located on segment. We must make sure the point is between the start side and the end side
}
 
// reinit segtree
void btClear() {
    for (int i = 0; i < pow2*2; i++) bt[i].clear();
}
 
// insert pair in bt interval
void btAdd(int rBegin, int rEnd, pii rPair, int qNode, int qBegin, int qEnd) {
    if (rBegin > qEnd or rEnd < qBegin) return;
    else if (rBegin <= qBegin and qEnd <= rEnd) bt[qNode].insert(rPair);
    else {
        int qMid = (qBegin+qEnd)/2;
        btAdd(rBegin, rEnd, rPair, qNode*2, qBegin, qMid);
        btAdd(rBegin, rEnd, rPair, qNode*2+1, qMid+1, qEnd);
    }
}
 
// remove pair from bt interval
void btRemove(int rBegin, int rEnd, pii rPair, int qNode, int qBegin, int qEnd) {
    if (rBegin > qEnd or rEnd < qBegin) return;
    else if (rBegin <= qBegin and qEnd <= rEnd) bt[qNode].erase(rPair);
    else {
        int qMid = (qBegin+qEnd)/2;
        btRemove(rBegin, rEnd, rPair, qNode*2, qBegin, qMid);
        btRemove(rBegin, rEnd, rPair, qNode*2+1, qMid+1, qEnd);
    }
}
 
// point request for maximum pair
pii btGetMax(int idx) {
    idx += pow2;
    pii mP = pii(-1, -1); // mP = max pair, init with lowest possible value, NOTE: time starts at 0
    while (idx != 0) {
        if (!bt[idx].empty()) {
            auto it = bt[idx].end();
            it = prev(it);
            pii itpi = *it;
            if (itpi.first > mP.first) {
                mP.first = itpi.first;
                mP.second = itpi.second;
            }
        }
        idx /= 2; // loop for all parents
    }
    return mP;
}
 
// small-to-large merging technique to count number of different colors
set<int>& dfs(int cn) { // cn = current node
    for (int nn : graph[cn]) { // nn = new node
        set<int>& ls = dfs(nn); // pass by reference
        if (colorsAtNode[cn].size() < ls.size()) swap(colorsAtNode[cn], ls);
        for (int j : ls) colorsAtNode[cn].insert(j); // small-to-large merging
    }
    nbColours[cn] = colorsAtNode[cn].size();
    return colorsAtNode[cn];
}
 
// #define LOCAL
#ifdef LOCAL
ifstream fin("plahte.in");
#define cin fin
#endif
 
int main() {
    int n, nbBalls;
    cin >> n >> nbBalls;
 
    set<int> coordSet; // used for index compression
    // to further optimize we could have two separate sets: one for the x dimension, on for the y dimension
 
    mp rect [n];
    vector<Event> sweep;
    for (int i = 0; i < n; i++) {
        cin >> rect[i].f.f >> rect[i].f.s >> rect[i].s.f >> rect[i].s.s;
        coordSet.insert(rect[i].f.f);
        coordSet.insert(rect[i].f.s);
        coordSet.insert(rect[i].s.f);
        coordSet.insert(rect[i].s.s);
    }
 
    int ballX [nbBalls];
    int ballY [nbBalls];
    int ballColor [nbBalls];
    for (int i = 0; i < nbBalls; i++) {
        cin >> ballX[i] >> ballY[i] >> ballColor[i];
        coordSet.insert(ballX[i]);
        coordSet.insert(ballY[i]);
    }
 
    unordered_map<int, int> coordMap; // compressed index map
    // since it's unordered, be careful with collisions
    // we could also use the faster hash map here : https://usaco.guide/gold/faster-hashmap?lang=cpp
    int c = 0;
    for (int i : coordSet) {
        coordMap[i] = c;
        c++;
    }
 
    // apply index compression
    for (int i = 0; i < n; i++) {
        rect[i].f.f = coordMap[rect[i].f.f];
        rect[i].f.s = coordMap[rect[i].f.s];
        rect[i].s.f = coordMap[rect[i].s.f];
        rect[i].s.s = coordMap[rect[i].s.s];
    }
    for (int i = 0; i < nbBalls; i++) {
        ballX[i] = coordMap[ballX[i]];
        ballY[i] = coordMap[ballY[i]];
    }
 
    // create Events for sweep line algorithm
    for (int i = 0; i < n; i++) {
        sweep.push_back(Event(true, true, rect[i].f.f, i));
        sweep.push_back(Event(true, false, rect[i].s.f, i));
    }
    for (int i = 0; i < nbBalls; i++) sweep.push_back(Event(false, -1, ballX[i], i)); // second parameter has no influence
 
    sort(sweep.begin(), sweep.end(), sf); // sort by x-coordinate
 
    btClear();
    int par [siz]; // the immediate rectangle a rectangle is contained inside
    int ballImpactRect [siz]; // the smallest rectangle the ball hits
    int insertedT [siz]; // remember time when deleting elements
    int t = 0; // time variable
    for (Event i : sweep) {
        if (i.isRectSide and i.x == rect[i.idx].f.f) {
            pii j = btGetMax(rect[i.idx].f.s); // it doesn't matter on which point of interval [ rect[i.idx].f.s ; rect[i.idx].s.s ] we look at since there are no sides crossing
            if (j.second == -1) j.second = n; // n is the virtual root
            par[i.idx] = j.s;
            insertedT[i.idx] = t;
            btAdd(rect[i.idx].f.s, rect[i.idx].s.s, pii(insertedT[i.idx], i.idx), 1, 0, pow2-1); // add this side as latest rectangle in this interval
        }
        else if (i.isRectSide and i.x == rect[i.idx].s.f) {
            btRemove(rect[i.idx].f.s, rect[i.idx].s.s, pii(insertedT[i.idx], i.idx), 1, 0, pow2-1);
        }
        else {
            pii j = btGetMax(ballY[i.idx]);
            if (j.second == -1) j.second = n; // n is the virtual root
            ballImpactRect[i.idx] = j.s;
        }
        t++;
    }
 
    for (int i = 0; i < n; i++) {
        graph[par[i]].push_back(i);
    }
 
    for (int i = 0; i < nbBalls; i++) {
        colorsAtNode[ballImpactRect[i]].insert(ballColor[i]);
    }
 
    // dfs(n); // start dfs from virtual root
 
    // for (int i = 0; i < n; i++) {
    //     cout << nbColours[i] << endl;
    // }
 
    int d = 0;
    d++;
}

Compilation message

plahte.cpp:1:2: error: stray '#' in program
    1 | v#include <iostream>
      |  ^
plahte.cpp:1:1: error: 'v' does not name a type
    1 | v#include <iostream>
      | ^
In file included from /usr/include/c++/10/iosfwd:40,
                 from /usr/include/c++/10/ios:38,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/include/c++/10/bits/postypes.h:98:11: error: 'ptrdiff_t' does not name a type
   98 |   typedef ptrdiff_t streamsize; // Signed integral type
      |           ^~~~~~~~~
/usr/include/c++/10/bits/postypes.h:41:1: note: 'ptrdiff_t' is defined in header '<cstddef>'; did you forget to '#include <cstddef>'?
   40 | #include <cwchar> // For mbstate_t
  +++ |+#include <cstddef>
   41 | 
In file included from /usr/include/c++/10/bits/exception_ptr.h:40,
                 from /usr/include/c++/10/exception:147,
                 from /usr/include/c++/10/ios:39,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/include/c++/10/new:126:26: error: declaration of 'operator new' as non-function
  126 | _GLIBCXX_NODISCARD void* operator new(std::size_t) _GLIBCXX_THROW (std::bad_alloc)
      |                          ^~~~~~~~
/usr/include/c++/10/new:126:44: error: 'size_t' is not a member of 'std'; did you mean 'size_t'?
  126 | _GLIBCXX_NODISCARD void* operator new(std::size_t) _GLIBCXX_THROW (std::bad_alloc)
      |                                            ^~~~~~
In file included from /usr/include/wchar.h:35,
                 from /usr/include/c++/10/cwchar:44,
                 from /usr/include/c++/10/bits/postypes.h:40,
                 from /usr/include/c++/10/iosfwd:40,
                 from /usr/include/c++/10/ios:38,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/lib/gcc/x86_64-linux-gnu/10/include/stddef.h:209:23: note: 'size_t' declared here
  209 | typedef __SIZE_TYPE__ size_t;
      |                       ^~~~~~
In file included from /usr/include/c++/10/bits/exception_ptr.h:40,
                 from /usr/include/c++/10/exception:147,
                 from /usr/include/c++/10/ios:39,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/include/c++/10/new:127:41: error: attributes after parenthesized initializer ignored [-fpermissive]
  127 |   __attribute__((__externally_visible__));
      |                                         ^
/usr/include/c++/10/new:128:26: error: declaration of 'operator new []' as non-function
  128 | _GLIBCXX_NODISCARD void* operator new[](std::size_t) _GLIBCXX_THROW (std::bad_alloc)
      |                          ^~~~~~~~
/usr/include/c++/10/new:128:46: error: 'size_t' is not a member of 'std'; did you mean 'size_t'?
  128 | _GLIBCXX_NODISCARD void* operator new[](std::size_t) _GLIBCXX_THROW (std::bad_alloc)
      |                                              ^~~~~~
In file included from /usr/include/wchar.h:35,
                 from /usr/include/c++/10/cwchar:44,
                 from /usr/include/c++/10/bits/postypes.h:40,
                 from /usr/include/c++/10/iosfwd:40,
                 from /usr/include/c++/10/ios:38,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/lib/gcc/x86_64-linux-gnu/10/include/stddef.h:209:23: note: 'size_t' declared here
  209 | typedef __SIZE_TYPE__ size_t;
      |                       ^~~~~~
In file included from /usr/include/c++/10/bits/exception_ptr.h:40,
                 from /usr/include/c++/10/exception:147,
                 from /usr/include/c++/10/ios:39,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/include/c++/10/new:129:41: error: attributes after parenthesized initializer ignored [-fpermissive]
  129 |   __attribute__((__externally_visible__));
      |                                         ^
/usr/include/c++/10/new:135:34: error: 'std::size_t' has not been declared
  135 | void operator delete(void*, std::size_t) _GLIBCXX_USE_NOEXCEPT
      |                                  ^~~~~~
/usr/include/c++/10/new:137:36: error: 'std::size_t' has not been declared
  137 | void operator delete[](void*, std::size_t) _GLIBCXX_USE_NOEXCEPT
      |                                    ^~~~~~
/usr/include/c++/10/new:140:26: error: declaration of 'operator new' as non-function
  140 | _GLIBCXX_NODISCARD void* operator new(std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
      |                          ^~~~~~~~
/usr/include/c++/10/new:140:44: error: 'size_t' is not a member of 'std'; did you mean 'size_t'?
  140 | _GLIBCXX_NODISCARD void* operator new(std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
      |                                            ^~~~~~
In file included from /usr/include/wchar.h:35,
                 from /usr/include/c++/10/cwchar:44,
                 from /usr/include/c++/10/bits/postypes.h:40,
                 from /usr/include/c++/10/iosfwd:40,
                 from /usr/include/c++/10/ios:38,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/lib/gcc/x86_64-linux-gnu/10/include/stddef.h:209:23: note: 'size_t' declared here
  209 | typedef __SIZE_TYPE__ size_t;
      |                       ^~~~~~
In file included from /usr/include/c++/10/bits/exception_ptr.h:40,
                 from /usr/include/c++/10/exception:147,
                 from /usr/include/c++/10/ios:39,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/include/c++/10/new:140:52: error: expected primary-expression before 'const'
  140 | _GLIBCXX_NODISCARD void* operator new(std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
      |                                                    ^~~~~
/usr/include/c++/10/new:142:26: error: declaration of 'operator new []' as non-function
  142 | _GLIBCXX_NODISCARD void* operator new[](std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
      |                          ^~~~~~~~
/usr/include/c++/10/new:142:46: error: 'size_t' is not a member of 'std'; did you mean 'size_t'?
  142 | _GLIBCXX_NODISCARD void* operator new[](std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
      |                                              ^~~~~~
In file included from /usr/include/wchar.h:35,
                 from /usr/include/c++/10/cwchar:44,
                 from /usr/include/c++/10/bits/postypes.h:40,
                 from /usr/include/c++/10/iosfwd:40,
                 from /usr/include/c++/10/ios:38,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/lib/gcc/x86_64-linux-gnu/10/include/stddef.h:209:23: note: 'size_t' declared here
  209 | typedef __SIZE_TYPE__ size_t;
      |                       ^~~~~~
In file included from /usr/include/c++/10/bits/exception_ptr.h:40,
                 from /usr/include/c++/10/exception:147,
                 from /usr/include/c++/10/ios:39,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/include/c++/10/new:142:54: error: expected primary-expression before 'const'
  142 | _GLIBCXX_NODISCARD void* operator new[](std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
      |                                                      ^~~~~
/usr/include/c++/10/new:174:33: error: declaration of 'operator new' as non-function
  174 | _GLIBCXX_NODISCARD inline void* operator new(std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
      |                                 ^~~~~~~~
/usr/include/c++/10/new:174:51: error: 'size_t' is not a member of 'std'; did you mean 'size_t'?
  174 | _GLIBCXX_NODISCARD inline void* operator new(std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
      |                                                   ^~~~~~
In file included from /usr/include/wchar.h:35,
                 from /usr/include/c++/10/cwchar:44,
                 from /usr/include/c++/10/bits/postypes.h:40,
                 from /usr/include/c++/10/iosfwd:40,
                 from /usr/include/c++/10/ios:38,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/lib/gcc/x86_64-linux-gnu/10/include/stddef.h:209:23: note: 'size_t' declared here
  209 | typedef __SIZE_TYPE__ size_t;
      |                       ^~~~~~
In file included from /usr/include/c++/10/bits/exception_ptr.h:40,
                 from /usr/include/c++/10/exception:147,
                 from /usr/include/c++/10/ios:39,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/include/c++/10/new:174:59: error: expected primary-expression before 'void'
  174 | _GLIBCXX_NODISCARD inline void* operator new(std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
      |                                                           ^~~~
/usr/include/c++/10/new:176:33: error: declaration of 'operator new []' as non-function
  176 | _GLIBCXX_NODISCARD inline void* operator new[](std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
      |                                 ^~~~~~~~
/usr/include/c++/10/new:176:53: error: 'size_t' is not a member of 'std'; did you mean 'size_t'?
  176 | _GLIBCXX_NODISCARD inline void* operator new[](std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
      |                                                     ^~~~~~
In file included from /usr/include/wchar.h:35,
                 from /usr/include/c++/10/cwchar:44,
                 from /usr/include/c++/10/bits/postypes.h:40,
                 from /usr/include/c++/10/iosfwd:40,
                 from /usr/include/c++/10/ios:38,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/lib/gcc/x86_64-linux-gnu/10/include/stddef.h:209:23: note: 'size_t' declared here
  209 | typedef __SIZE_TYPE__ size_t;
      |                       ^~~~~~
In file included from /usr/include/c++/10/bits/exception_ptr.h:40,
                 from /usr/include/c++/10/exception:147,
                 from /usr/include/c++/10/ios:39,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/include/c++/10/new:176:61: error: expected primary-expression before 'void'
  176 | _GLIBCXX_NODISCARD inline void* operator new[](std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
      |                                                             ^~~~
In file included from /usr/include/c++/10/bits/move.h:57,
                 from /usr/include/c++/10/bits/nested_exception.h:40,
                 from /usr/include/c++/10/exception:148,
                 from /usr/include/c++/10/ios:39,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/include/c++/10/type_traits:402:31: error: 'std::size_t' has not been declared
  402 |   template<typename _Tp, std::size_t _Size>
      |                               ^~~~~~
/usr/include/c++/10/type_traits:403:25: error: '_Size' was not declared in this scope
  403 |     struct is_array<_Tp[_Size]>
      |                         ^~~~~
/usr/include/c++/10/type_traits:403:31: error: template argument 1 is invalid
  403 |     struct is_array<_Tp[_Size]>
      |                               ^
/usr/include/c++/10/type_traits:508:42: error: 'nullptr_t' is not a member of 'std'; did you mean 'nullptr_t'?
  508 |     struct __is_null_pointer_helper<std::nullptr_t>
      |                                          ^~~~~~~~~
In file included from /usr/include/c++/10/bits/cxxabi_init_exception.h:38,
                 from /usr/include/c++/10/bits/exception_ptr.h:38,
                 from /usr/include/c++/10/exception:147,
                 from /usr/include/c++/10/ios:39,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/lib/gcc/x86_64-linux-gnu/10/include/stddef.h:433:29: note: 'nullptr_t' declared here
  433 |   typedef decltype(nullptr) nullptr_t;
      |                             ^~~~~~~~~
In file included from /usr/include/c++/10/bits/move.h:57,
                 from /usr/include/c++/10/bits/nested_exception.h:40,
                 from /usr/include/c++/10/exception:148,
                 from /usr/include/c++/10/ios:39,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/include/c++/10/type_traits:508:42: error: 'nullptr_t' is not a member of 'std'; did you mean 'nullptr_t'?
  508 |     struct __is_null_pointer_helper<std::nullptr_t>
      |                                          ^~~~~~~~~
In file included from /usr/include/c++/10/bits/cxxabi_init_exception.h:38,
                 from /usr/include/c++/10/bits/exception_ptr.h:38,
                 from /usr/include/c++/10/exception:147,
                 from /usr/include/c++/10/ios:39,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/lib/gcc/x86_64-linux-gnu/10/include/stddef.h:433:29: note: 'nullptr_t' declared here
  433 |   typedef decltype(nullptr) nullptr_t;
      |                             ^~~~~~~~~
In file included from /usr/include/c++/10/bits/move.h:57,
                 from /usr/include/c++/10/bits/nested_exception.h:40,
                 from /usr/include/c++/10/exception:148,
                 from /usr/include/c++/10/ios:39,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/include/c++/10/type_traits:508:51: error: template argument 1 is invalid
  508 |     struct __is_null_pointer_helper<std::nullptr_t>
      |                                                   ^
/usr/include/c++/10/type_traits:1351:37: error: 'size_t' is not a member of 'std'; did you mean 'size_t'?
 1351 |     : public integral_constant<std::size_t, alignof(_Tp)>
      |                                     ^~~~~~
In file included from /usr/include/wchar.h:35,
                 from /usr/include/c++/10/cwchar:44,
                 from /usr/include/c++/10/bits/postypes.h:40,
                 from /usr/include/c++/10/iosfwd:40,
                 from /usr/include/c++/10/ios:38,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/lib/gcc/x86_64-linux-gnu/10/include/stddef.h:209:23: note: 'size_t' declared here
  209 | typedef __SIZE_TYPE__ size_t;
      |                       ^~~~~~
In file included from /usr/include/c++/10/bits/move.h:57,
                 from /usr/include/c++/10/bits/nested_exception.h:40,
                 from /usr/include/c++/10/exception:148,
                 from /usr/include/c++/10/ios:39,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/include/c++/10/type_traits:1351:37: error: 'size_t' is not a member of 'std'; did you mean 'size_t'?
 1351 |     : public integral_constant<std::size_t, alignof(_Tp)>
      |                                     ^~~~~~
In file included from /usr/include/wchar.h:35,
                 from /usr/include/c++/10/cwchar:44,
                 from /usr/include/c++/10/bits/postypes.h:40,
                 from /usr/include/c++/10/iosfwd:40,
                 from /usr/include/c++/10/ios:38,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/lib/gcc/x86_64-linux-gnu/10/include/stddef.h:209:23: note: 'size_t' declared here
  209 | typedef __SIZE_TYPE__ size_t;
      |                       ^~~~~~
In file included from /usr/include/c++/10/bits/move.h:57,
                 from /usr/include/c++/10/bits/nested_exception.h:40,
                 from /usr/include/c++/10/exception:148,
                 from /usr/include/c++/10/ios:39,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/include/c++/10/type_traits:1351:57: error: template argument 1 is invalid
 1351 |     : public integral_constant<std::size_t, alignof(_Tp)>
      |                                                         ^
/usr/include/c++/10/type_traits:1351:57: note: invalid template non-type parameter
/usr/include/c++/10/type_traits:1360:37: error: 'size_t' is not a member of 'std'; did you mean 'size_t'?
 1360 |     : public integral_constant<std::size_t, 0> { };
      |                                     ^~~~~~
In file included from /usr/include/wchar.h:35,
                 from /usr/include/c++/10/cwchar:44,
                 from /usr/include/c++/10/bits/postypes.h:40,
                 from /usr/include/c++/10/iosfwd:40,
                 from /usr/include/c++/10/ios:38,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/lib/gcc/x86_64-linux-gnu/10/include/stddef.h:209:23: note: 'size_t' declared here
  209 | typedef __SIZE_TYPE__ size_t;
      |                       ^~~~~~
In file included from /usr/include/c++/10/bits/move.h:57,
                 from /usr/include/c++/10/bits/nested_exception.h:40,
                 from /usr/include/c++/10/exception:148,
                 from /usr/include/c++/10/ios:39,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/include/c++/10/type_traits:1360:37: error: 'size_t' is not a member of 'std'; did you mean 'size_t'?
 1360 |     : public integral_constant<std::size_t, 0> { };
      |                                     ^~~~~~
In file included from /usr/include/wchar.h:35,
                 from /usr/include/c++/10/cwchar:44,
                 from /usr/include/c++/10/bits/postypes.h:40,
                 from /usr/include/c++/10/iosfwd:40,
                 from /usr/include/c++/10/ios:38,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/fstream:38,
                 from plahte.cpp:2:
/usr/lib/gcc/x86_64-linux-gnu/10/include/stddef.h:209:23: note: 'size_t' declared