Submission #955034

#	Time	Username	Problem	Language	Result	Execution time	Memory
955034		Trisanu_Das	Carnival Tickets (IOI20_tickets)	C++17	Compilation error	0 ms	0 KiB

tickets

#include "tickets.h"
#include <bits/stdc++.h>
using namespace std;
 
long long find_maximum(int k, vector<vector<int> > x) {
  int n = x.size(), m = x[0].size();
  vector<vector<int> > ans(n, vector<int>(m, -1));
  if(k == 1){
    long long sum = 0;
    priority_queue<pair<long long, long long>,  vector<pair<long long, long long> >, greater<pair<long long, long long> > pq;
    for(int i = 0; i < n; i++){
      sum += x[i][m - 1];
      pq.push({x[i][0] + x[i][m - 1], i});
    }
    for(int i = 0; i < n; i++){
      if(i < n / 2){
        sum -= pq.top().first;
        ans[pq.top().second][0] = 0;
      }else ans[pq.top().second][m - 1] = 0;
    }
    allocate_tickets(ans);
    return sum;
  }
}

Compilation message (stderr)

tickets.cpp: In function 'long long int find_maximum(int, std::vector<std::vector<int> >)':
tickets.cpp:10:123: error: template argument 3 is invalid
   10 |     priority_queue<pair<long long, long long>,  vector<pair<long long, long long> >, greater<pair<long long, long long> > pq;
      |                                                                                                                           ^~
tickets.cpp:13:7: error: 'pq' was not declared in this scope
   13 |       pq.push({x[i][0] + x[i][m - 1], i});
      |       ^~
tickets.cpp:17:16: error: 'pq' was not declared in this scope
   17 |         sum -= pq.top().first;
      |                ^~
tickets.cpp:19:17: error: 'pq' was not declared in this scope
   19 |       }else ans[pq.top().second][m - 1] = 0;
      |                 ^~
tickets.cpp:7:49: warning: control reaches end of non-void function [-Wreturn-type]
    7 |   vector<vector<int> > ans(n, vector<int>(m, -1));
      |                                                 ^