Submission #600564

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
600564	2022-07-21 05:08:40	kig9981	Counting Mushrooms (IOI20_mushrooms)	C++17	Compilation error	0 ms	0 KiB

mushrooms

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#include "mushrooms.h"
#include <bits/stdc++.h>
#ifdef NON_SUBMIT
#define TEST(n) (n)
#define tout cerr
#else
#define TEST(n) ((void)0)
#define tout cin
#endif
using namespace std;
vector<pair<int,int>> V;
vector<int> A, B, Q;
int D[3];
void query2()
{
  int a=V[0].first, b=V[1].first, r;
  if(A.size()>1) {
    r=use_machine({A[0],a,A[1],b});
    if(r&1) {
      B.push_back(b);
      A.push_back(V[1].second);
    }
    else {
      A.push_back(b);
      B.push_back(V[1].second);
    }
 
 
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Compilation message (stderr)

mushrooms.cpp: In function 'void query2()':
mushrooms.cpp:37:27: error: no matching function for call to 'std::vector<std::pair<int, int> >::push_back(int&)'
   37 |    V.push_back(V[0].second);
      |                           ^
In file included from /usr/include/c++/10/vector:67,
                 from mushrooms.h:1,
                 from mushrooms.cpp:1:
/usr/include/c++/10/bits/stl_vector.h:1187:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>]'
 1187 |       push_back(const value_type& __x)
      |       ^~~~~~~~~
/usr/include/c++/10/bits/stl_vector.h:1187:35: note:   no known conversion for argument 1 from 'int' to 'const value_type&' {aka 'const std::pair<int, int>&'}
 1187 |       push_back(const value_type& __x)
      |                 ~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_vector.h:1203:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(std::vector<_Tp, _Alloc>::value_type&&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>]'
 1203 |       push_back(value_type&& __x)
      |       ^~~~~~~~~
/usr/include/c++/10/bits/stl_vector.h:1203:30: note:   no known conversion for argument 1 from 'int' to 'std::vector<std::pair<int, int> >::value_type&&' {aka 'std::pair<int, int>&&'}
 1203 |       push_back(value_type&& __x)
      |                 ~~~~~~~~~~~~~^~~
mushrooms.cpp: In function 'int query()':
mushrooms.cpp:148:13: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  148 |  if(A.size()>=m) {
      |     ~~~~~~~~^~~