Submission #531548

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
531548	2022-03-01T03:49:29 Z	christinelynn	Carnival (CEOI14_carnival)	C++17	Compilation error	0 ms	0 KB

carnival

#include <bits/stdc++.h>
using namespace std;

int a[151], n;
map<pair<int,int>, int> mp;

int ask(int x, int y){
  if(x > y) swap(x, y);
  if(mp.find({x, y}))
  {
    return mp[{x, y}];
  }
  cout << "2 " << x << " " << y << endl;
  int z;
  cin >> z;
  mp[{x, y}] = z;
  return z;
}

int main(){
  cin.tie(0) -> ios_base::sync_with_stdio(0);

  cin >> n;
  iota(a, a + n, 1);
  for(int i=0;i<n;i++)
  {
    for(int j=0;j<i;j++)
    {
      if(ask(a[i], a[j]) == 1)
      {
        a[i] = a[j];
      }
    }
  }
  cout << "0 ";
  for(int i=0;i<n;i++) cout << a[i] << " "; cout << endl;
}

Compilation message

carnival.cpp: In function 'int ask(int, int)':
carnival.cpp:9:13: error: could not convert 'mp.std::map<std::pair<int, int>, int>::find(std::pair<int, int>(x, y))' from 'std::map<std::pair<int, int>, int>::iterator' {aka 'std::_Rb_tree<std::pair<int, int>, std::pair<const std::pair<int, int>, int>, std::_Select1st<std::pair<const std::pair<int, int>, int> >, std::less<std::pair<int, int> >, std::allocator<std::pair<const std::pair<int, int>, int> > >::iterator'} to 'bool'
    9 |   if(mp.find({x, y}))
      |      ~~~~~~~^~~~~~~~
      |             |
      |             std::map<std::pair<int, int>, int>::iterator {aka std::_Rb_tree<std::pair<int, int>, std::pair<const std::pair<int, int>, int>, std::_Select1st<std::pair<const std::pair<int, int>, int> >, std::less<std::pair<int, int> >, std::allocator<std::pair<const std::pair<int, int>, int> > >::iterator}
carnival.cpp: In function 'int main()':
carnival.cpp:36:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   36 |   for(int i=0;i<n;i++) cout << a[i] << " "; cout << endl;
      |   ^~~
carnival.cpp:36:45: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   36 |   for(int i=0;i<n;i++) cout << a[i] << " "; cout << endl;
      |                                             ^~~~