Submission #916371

#	Time	Username	Problem	Language	Result	Execution time	Memory
916371		biank	Rail (IOI14_rail)	C++14	Compilation error	0 ms	0 KiB

rail

#include <bits/stdc++.h>
using namespace std;
#define ALL(x) x.begin(),x.end()
#define forn(i,n) for(int i=0;i<int(n);i++)
#define forsn(i,s,n) for(int i=int(s);i<int(n);i++)
#define fst first
#define snd second
typedef pair<int,int> ii;

const int C = 1, D = 2;

void findLocation(int n, int first, int loc[], int stype[]) {
    vector<ii> p(n);
    forsn(i,1,n) p[i]={getDistance(0,i),i};
    sort(ALL(p));
    set<ii> Cs, Ds;
    for(auto [d0,i]:p) {
        if(Cs.empty()) {
            loc[i]=first;
            stype[i]=C;
            Cs.insert((ii){loc[i],i});
            continue;
        }
        int minC = Cs.begin()->snd;
        if(Ds.empty()) {
            loc[i]=loc[minC]+d0;
            stype[i]=D;
            Ds.insert((ii){loc[i],i});
            continue;
        }
        int maxD = Ds.rbegin()->snd;
        int distItoC = getDistance(i,minC);
        int distItoD = getDistance(maxD,i);
        loc[i] = loc[minC] + distItoC;
        int target = (loc[i] + loc[maxD] - distItoD)/2;
        auto it = Cs.lower_bound((ii){target,0});
        if(it != Cs.end() && loc[i] - it->fst + loc[maxD] - it->fst == distItoD) {
            stype[i] = D;
            Ds.insert((ii){loc[i],i});
            continue;
        }
        loc[i] = loc[maxD] - distItoD;
        target = (distItoC + loc[i] + loc[minC])/2;
        it = Ds.lower_bound((ii){target,0});
        if(it != Ds.end() && it->fst - loc[i] + it->fst - loc[minC] == distItoC) {
            stype[i] = C;
            Cs.insert((ii){loc[i],i});
            continue;
        }
        assert(false);
    }
}

Compilation message (stderr)

rail.cpp: In function 'void findLocation(int, int, int*, int*)':
rail.cpp:14:24: error: 'getDistance' was not declared in this scope
   14 |     forsn(i,1,n) p[i]={getDistance(0,i),i};
      |                        ^~~~~~~~~~~
rail.cpp:14:42: error: no match for 'operator=' (operand types are '__gnu_cxx::__alloc_traits<std::allocator<std::pair<int, int> >, std::pair<int, int> >::value_type' {aka 'std::pair<int, int>'} and '<brace-enclosed initializer list>')
   14 |     forsn(i,1,n) p[i]={getDistance(0,i),i};
      |                                          ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:64,
                 from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from rail.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:390:7: note: candidate: 'std::pair<_T1, _T2>& std::pair<_T1, _T2>::operator=(typename std::conditional<std::__and_<std::is_copy_assignable<_T1>, std::is_copy_assignable<_T2> >::value, const std::pair<_T1, _T2>&, const std::__nonesuch&>::type) [with _T1 = int; _T2 = int; typename std::conditional<std::__and_<std::is_copy_assignable<_T1>, std::is_copy_assignable<_T2> >::value, const std::pair<_T1, _T2>&, const std::__nonesuch&>::type = const std::pair<int, int>&]'
  390 |       operator=(typename conditional<
      |       ^~~~~~~~
/usr/include/c++/10/bits/stl_pair.h:393:41: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'std::conditional<true, const std::pair<int, int>&, const std::__nonesuch&>::type' {aka 'const std::pair<int, int>&'}
  390 |       operator=(typename conditional<
      |                 ~~~~~~~~~~~~~~~~~~~~~    
  391 |   __and_<is_copy_assignable<_T1>,
      |   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~        
  392 |          is_copy_assignable<_T2>>::value,
      |          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  393 |   const pair&, const __nonesuch&>::type __p)
      |   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_pair.h:401:7: note: candidate: 'std::pair<_T1, _T2>& std::pair<_T1, _T2>::operator=(typename std::conditional<std::__and_<std::is_move_assignable<_Tp>, std::is_move_assignable<_T2> >::value, std::pair<_T1, _T2>&&, std::__nonesuch&&>::type) [with _T1 = int; _T2 = int; typename std::conditional<std::__and_<std::is_move_assignable<_Tp>, std::is_move_assignable<_T2> >::value, std::pair<_T1, _T2>&&, std::__nonesuch&&>::type = std::pair<int, int>&&]'
  401 |       operator=(typename conditional<
      |       ^~~~~~~~
/usr/include/c++/10/bits/stl_pair.h:404:31: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'std::conditional<true, std::pair<int, int>&&, std::__nonesuch&&>::type' {aka 'std::pair<int, int>&&'}
  401 |       operator=(typename conditional<
      |                 ~~~~~~~~~~~~~~~~~~~~~
  402 |   __and_<is_move_assignable<_T1>,
      |   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  403 |          is_move_assignable<_T2>>::value,
      |          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  404 |   pair&&, __nonesuch&&>::type __p)
      |   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_pair.h:418:2: note: candidate: 'template<class _U1, class _U2> typename std::enable_if<std::__and_<std::is_assignable<_T1&, const _U1&>, std::is_assignable<_T2&, const _U2&> >::value, std::pair<_T1, _T2>&>::type std::pair<_T1, _T2>::operator=(const std::pair<_U1, _U2>&) [with _U1 = _U1; _U2 = _U2; _T1 = int; _T2 = int]'
  418 |  operator=(const pair<_U1, _U2>& __p)
      |  ^~~~~~~~
/usr/include/c++/10/bits/stl_pair.h:418:2: note:   template argument deduction/substitution failed:
rail.cpp:14:42: note:   couldn't deduce template parameter '_U1'
   14 |     forsn(i,1,n) p[i]={getDistance(0,i),i};
      |                                          ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:64,
                 from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from rail.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:430:2: note: candidate: 'template<class _U1, class _U2> typename std::enable_if<std::__and_<std::is_assignable<_T1&, _U1&&>, std::is_assignable<_T2&, _U2&&> >::value, std::pair<_T1, _T2>&>::type std::pair<_T1, _T2>::operator=(std::pair<_U1, _U2>&&) [with _U1 = _U1; _U2 = _U2; _T1 = int; _T2 = int]'
  430 |  operator=(pair<_U1, _U2>&& __p)
      |  ^~~~~~~~
/usr/include/c++/10/bits/stl_pair.h:430:2: note:   template argument deduction/substitution failed:
rail.cpp:14:42: note:   couldn't deduce template parameter '_U1'
   14 |     forsn(i,1,n) p[i]={getDistance(0,i),i};
      |                                          ^
rail.cpp:17:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   17 |     for(auto [d0,i]:p) {
      |              ^
rail.cpp:32:24: error: 'getDistance' was not declared in this scope
   32 |         int distItoC = getDistance(i,minC);
      |                        ^~~~~~~~~~~