Submission #282676

#	Time	Username	Problem	Language	Result	Execution time	Memory
282676		medmdg	Arranging Shoes (IOI19_shoes)	C++14	Compilation error	0 ms	0 KiB

shoes

#include <bits/stdc++.h>

using namespace std;
long long count_swaps(std::vector<int> S){
    int ans=0;
    int count=0;
    while(S.size()){
        if(S[0]>0)
            count ++;
        for(int i=1;i<S.size();i++){
            if(S[i]==-1*S[0]){
                count += i-1;
                S.erase(i);
                S.erase(0);
                break;
            }
        }
        ans+=count;
    }
    return ans;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:10:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |         for(int i=1;i<S.size();i++){
      |                     ~^~~~~~~~~
shoes.cpp:13:26: error: no matching function for call to 'std::vector<int>::erase(int&)'
   13 |                 S.erase(i);
      |                          ^
In file included from /usr/include/c++/9/vector:67,
                 from /usr/include/c++/9/queue:61,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:86,
                 from shoes.cpp:1:
/usr/include/c++/9/bits/stl_vector.h:1427:7: note: candidate: 'std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::erase(std::vector<_Tp, _Alloc>::const_iterator) [with _Tp = int; _Alloc = std::allocator<int>; std::vector<_Tp, _Alloc>::iterator = __gnu_cxx::__normal_iterator<int*, std::vector<int> >; typename std::_Vector_base<_Tp, _Alloc>::pointer = int*; std::vector<_Tp, _Alloc>::const_iterator = __gnu_cxx::__normal_iterator<const int*, std::vector<int> >; typename __gnu_cxx::__alloc_traits<typename std::_Vector_base<_Tp, _Alloc>::_Tp_alloc_type>::const_pointer = const int*]'
 1427 |       erase(const_iterator __position)
      |       ^~~~~
/usr/include/c++/9/bits/stl_vector.h:1427:28: note:   no known conversion for argument 1 from 'int' to 'std::vector<int>::const_iterator' {aka '__gnu_cxx::__normal_iterator<const int*, std::vector<int> >'}
 1427 |       erase(const_iterator __position)
      |             ~~~~~~~~~~~~~~~^~~~~~~~~~
/usr/include/c++/9/bits/stl_vector.h:1454:7: note: candidate: 'std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::erase(std::vector<_Tp, _Alloc>::const_iterator, std::vector<_Tp, _Alloc>::const_iterator) [with _Tp = int; _Alloc = std::allocator<int>; std::vector<_Tp, _Alloc>::iterator = __gnu_cxx::__normal_iterator<int*, std::vector<int> >; typename std::_Vector_base<_Tp, _Alloc>::pointer = int*; std::vector<_Tp, _Alloc>::const_iterator = __gnu_cxx::__normal_iterator<const int*, std::vector<int> >; typename __gnu_cxx::__alloc_traits<typename std::_Vector_base<_Tp, _Alloc>::_Tp_alloc_type>::const_pointer = const int*]'
 1454 |       erase(const_iterator __first, const_iterator __last)
      |       ^~~~~
/usr/include/c++/9/bits/stl_vector.h:1454:7: note:   candidate expects 2 arguments, 1 provided
shoes.cpp:14:26: error: no matching function for call to 'std::vector<int>::erase(int)'
   14 |                 S.erase(0);
      |                          ^
In file included from /usr/include/c++/9/vector:67,
                 from /usr/include/c++/9/queue:61,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:86,
                 from shoes.cpp:1:
/usr/include/c++/9/bits/stl_vector.h:1427:7: note: candidate: 'std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::erase(std::vector<_Tp, _Alloc>::const_iterator) [with _Tp = int; _Alloc = std::allocator<int>; std::vector<_Tp, _Alloc>::iterator = __gnu_cxx::__normal_iterator<int*, std::vector<int> >; typename std::_Vector_base<_Tp, _Alloc>::pointer = int*; std::vector<_Tp, _Alloc>::const_iterator = __gnu_cxx::__normal_iterator<const int*, std::vector<int> >; typename __gnu_cxx::__alloc_traits<typename std::_Vector_base<_Tp, _Alloc>::_Tp_alloc_type>::const_pointer = const int*]'
 1427 |       erase(const_iterator __position)
      |       ^~~~~
/usr/include/c++/9/bits/stl_vector.h:1427:28: note:   no known conversion for argument 1 from 'int' to 'std::vector<int>::const_iterator' {aka '__gnu_cxx::__normal_iterator<const int*, std::vector<int> >'}
 1427 |       erase(const_iterator __position)
      |             ~~~~~~~~~~~~~~~^~~~~~~~~~
/usr/include/c++/9/bits/stl_vector.h:1454:7: note: candidate: 'std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::erase(std::vector<_Tp, _Alloc>::const_iterator, std::vector<_Tp, _Alloc>::const_iterator) [with _Tp = int; _Alloc = std::allocator<int>; std::vector<_Tp, _Alloc>::iterator = __gnu_cxx::__normal_iterator<int*, std::vector<int> >; typename std::_Vector_base<_Tp, _Alloc>::pointer = int*; std::vector<_Tp, _Alloc>::const_iterator = __gnu_cxx::__normal_iterator<const int*, std::vector<int> >; typename __gnu_cxx::__alloc_traits<typename std::_Vector_base<_Tp, _Alloc>::_Tp_alloc_type>::const_pointer = const int*]'
 1454 |       erase(const_iterator __first, const_iterator __last)
      |       ^~~~~
/usr/include/c++/9/bits/stl_vector.h:1454:7: note:   candidate expects 2 arguments, 1 provided