Submission #723117

#	Time	Username	Problem	Language	Result	Execution time	Memory
723117		sochu	Race (IOI11_race)	C++17	Compilation error	0 ms	0 KiB

race

    #include <bits/stdc++.h>

using namespace std;
	const int N = 2e5 + 10;

    set < pii > G[N];
    int sz[N];
    int a[N * 10];

    int K;

    void getsize(int node , int par)
    {
        sz[node] = 1;

        for(auto to : G[node])
            if(to.first != par)
            {
                getsize(to.first , node);
                sz[node] += sz[to.first];
            }
    }

    int find(int node , int par , int n)
    {
        for(auto to : G[node])
            if(to.first != par)
            {
                if(sz[to.first] > n / 2)
                    return find(to.first , node , n);
            }

        return node;
    }

    int ans = INT_MAX;

    void get(int node , int par , int len , int h)
    {
        if(len <= K && a[K - len])
            ans = min(ans , a[K - len] + h - 1);

        for(auto to : G[node])
            if(to.first != par)
                get(to.first , node , len + to.second , h + 1);
    }

    void add(int node , int par , int len , int h)
    {
        if(len <= K)
        {
            if(a[len] == 0) a[len] = h - 1;
            else a[len] = min(a[len] , h - 1);
        }

        for(auto to : G[node])
            if(to.first != par)
                add(to.first , node , len + to.second , h + 1);
    }

    void solve(int root)
    {
        for(int i = 0 ; i <= K ; i++)
            a[i] = 0;

        for(auto to : G[root])
        {
            get(to.first , root , to.second , 2);
            add(to.first , root , to.second , 2);
        }
    }

    void decomp(int root)
    {
        getsize(root , 0);
        int c = find(root , 0 , sz[root]);
        solve(c);

        for(auto to : G[c])
        {
            G[to.first].erase({c , to.second});
            decomp(to.first);
        }
    }


    int best_path(int n , int k , int H[][2] , int L[])
    {
        K = k;

        for(int i = 0 ; i < n - 1 ; i++)
        {
            int x = H[i][0];
            int y = H[i][1];

            G[x].insert({y , L[i]});
            G[y].insert({x , L[i]});
        }

        decomp(1);
        if(ans == INT_MAX) ans = -1;
        return ans;
    }

Compilation message (stderr)

race.cpp:6:11: error: 'pii' was not declared in this scope
    6 |     set < pii > G[N];
      |           ^~~
race.cpp:6:15: error: template argument 1 is invalid
    6 |     set < pii > G[N];
      |               ^
race.cpp:6:15: error: template argument 2 is invalid
race.cpp:6:15: error: template argument 3 is invalid
race.cpp: In function 'void getsize(int, int)':
race.cpp:16:29: error: 'begin' was not declared in this scope
   16 |         for(auto to : G[node])
      |                             ^
race.cpp:16:29: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from race.cpp:1:
/usr/include/c++/10/valarray:1224:5: note:   'std::begin'
 1224 |     begin(const valarray<_Tp>& __va)
      |     ^~~~~
In file included from /usr/include/c++/10/filesystem:46,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from race.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:549:3: note:   'std::filesystem::__cxx11::begin'
  549 |   begin(recursive_directory_iterator __iter) noexcept
      |   ^~~~~
race.cpp:16:29: error: 'end' was not declared in this scope
   16 |         for(auto to : G[node])
      |                             ^
race.cpp:16:29: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from race.cpp:1:
/usr/include/c++/10/valarray:1244:5: note:   'std::end'
 1244 |     end(const valarray<_Tp>& __va)
      |     ^~~
In file included from /usr/include/c++/10/filesystem:46,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from race.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:554:3: note:   'std::filesystem::__cxx11::end'
  554 |   end(recursive_directory_iterator) noexcept
      |   ^~~
race.cpp: In function 'int find(int, int, int)':
race.cpp:26:29: error: 'begin' was not declared in this scope
   26 |         for(auto to : G[node])
      |                             ^
race.cpp:26:29: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from race.cpp:1:
/usr/include/c++/10/valarray:1224:5: note:   'std::begin'
 1224 |     begin(const valarray<_Tp>& __va)
      |     ^~~~~
In file included from /usr/include/c++/10/filesystem:46,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from race.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:549:3: note:   'std::filesystem::__cxx11::begin'
  549 |   begin(recursive_directory_iterator __iter) noexcept
      |   ^~~~~
race.cpp:26:29: error: 'end' was not declared in this scope
   26 |         for(auto to : G[node])
      |                             ^
race.cpp:26:29: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from race.cpp:1:
/usr/include/c++/10/valarray:1244:5: note:   'std::end'
 1244 |     end(const valarray<_Tp>& __va)
      |     ^~~
In file included from /usr/include/c++/10/filesystem:46,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from race.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:554:3: note:   'std::filesystem::__cxx11::end'
  554 |   end(recursive_directory_iterator) noexcept
      |   ^~~
race.cpp: In function 'void get(int, int, int, int)':
race.cpp:43:29: error: 'begin' was not declared in this scope
   43 |         for(auto to : G[node])
      |                             ^
race.cpp:43:29: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from race.cpp:1:
/usr/include/c++/10/valarray:1224:5: note:   'std::begin'
 1224 |     begin(const valarray<_Tp>& __va)
      |     ^~~~~
In file included from /usr/include/c++/10/filesystem:46,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from race.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:549:3: note:   'std::filesystem::__cxx11::begin'
  549 |   begin(recursive_directory_iterator __iter) noexcept
      |   ^~~~~
race.cpp:43:29: error: 'end' was not declared in this scope
   43 |         for(auto to : G[node])
      |                             ^
race.cpp:43:29: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from race.cpp:1:
/usr/include/c++/10/valarray:1244:5: note:   'std::end'
 1244 |     end(const valarray<_Tp>& __va)
      |     ^~~
In file included from /usr/include/c++/10/filesystem:46,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from race.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:554:3: note:   'std::filesystem::__cxx11::end'
  554 |   end(recursive_directory_iterator) noexcept
      |   ^~~
race.cpp: In function 'void add(int, int, int, int)':
race.cpp:56:29: error: 'begin' was not declared in this scope
   56 |         for(auto to : G[node])
      |                             ^
race.cpp:56:29: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from race.cpp:1:
/usr/include/c++/10/valarray:1224:5: note:   'std::begin'
 1224 |     begin(const valarray<_Tp>& __va)
      |     ^~~~~
In file included from /usr/include/c++/10/filesystem:46,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from race.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:549:3: note:   'std::filesystem::__cxx11::begin'
  549 |   begin(recursive_directory_iterator __iter) noexcept
      |   ^~~~~
race.cpp:56:29: error: 'end' was not declared in this scope
   56 |         for(auto to : G[node])
      |                             ^
race.cpp:56:29: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from race.cpp:1:
/usr/include/c++/10/valarray:1244:5: note:   'std::end'
 1244 |     end(const valarray<_Tp>& __va)
      |     ^~~
In file included from /usr/include/c++/10/filesystem:46,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from race.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:554:3: note:   'std::filesystem::__cxx11::end'
  554 |   end(recursive_directory_iterator) noexcept
      |   ^~~
race.cpp: In function 'void solve(int)':
race.cpp:66:29: error: 'begin' was not declared in this scope
   66 |         for(auto to : G[root])
      |                             ^
race.cpp:66:29: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from race.cpp:1:
/usr/include/c++/10/valarray:1224:5: note:   'std::begin'
 1224 |     begin(const valarray<_Tp>& __va)
      |     ^~~~~
In file included from /usr/include/c++/10/filesystem:46,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from race.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:549:3: note:   'std::filesystem::__cxx11::begin'
  549 |   begin(recursive_directory_iterator __iter) noexcept
      |   ^~~~~
race.cpp:66:29: error: 'end' was not declared in this scope
   66 |         for(auto to : G[root])
      |                             ^
race.cpp:66:29: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from race.cpp:1:
/usr/include/c++/10/valarray:1244:5: note:   'std::end'
 1244 |     end(const valarray<_Tp>& __va)
      |     ^~~
In file included from /usr/include/c++/10/filesystem:46,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from race.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:554:3: note:   'std::filesystem::__cxx11::end'
  554 |   end(recursive_directory_iterator) noexcept
      |   ^~~
race.cpp: In function 'void decomp(int)':
race.cpp:79:26: error: 'begin' was not declared in this scope
   79 |         for(auto to : G[c])
      |                          ^
race.cpp:79:26: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from race.cpp:1:
/usr/include/c++/10/valarray:1224:5: note:   'std::begin'
 1224 |     begin(const valarray<_Tp>& __va)
      |     ^~~~~
In file included from /usr/include/c++/10/filesystem:46,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from race.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:549:3: note:   'std::filesystem::__cxx11::begin'
  549 |   begin(recursive_directory_iterator __iter) noexcept
      |   ^~~~~
race.cpp:79:26: error: 'end' was not declared in this scope
   79 |         for(auto to : G[c])
      |                          ^
race.cpp:79:26: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from race.cpp:1:
/usr/include/c++/10/valarray:1244:5: note:   'std::end'
 1244 |     end(const valarray<_Tp>& __va)
      |     ^~~
In file included from /usr/include/c++/10/filesystem:46,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from race.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:554:3: note:   'std::filesystem::__cxx11::end'
  554 |   end(recursive_directory_iterator) noexcept
      |   ^~~
race.cpp: In function 'int best_path(int, int, int (*)[2], int*)':
race.cpp:96:18: error: request for member 'insert' in 'G[x]', which is of non-class type 'int'
   96 |             G[x].insert({y , L[i]});
      |                  ^~~~~~
race.cpp:97:18: error: request for member 'insert' in 'G[y]', which is of non-class type 'int'
   97 |             G[y].insert({x , L[i]});
      |                  ^~~~~~