Submission #1289679

#	Time	Username	Problem	Language	Result	Execution time	Memory
1289679		bilgun	카니발 티켓 (IOI20_tickets)	C++20	Compilation error	0 ms	0 KiB

tickets

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

long long find_maximum(int k, vector<vector<int>> vec) {
	long long n = vec.size(), m = vec[0].size();
	
	if( m == 1) {
	    vector<vector<int>> ans(n);
		vector<long long> col;
		long long count = 0, s = 0;
		for( int i = 0; i < n; i++) {
			ans[i].push_back(0);
			col.push_back(vec[i][0]);
		}
		sort(col.begin(), col.end());
		long long mid = col[n/2];
		for( int i = 0; i < n; i++) {
			s += abs(vec[i][0] - mid);
		}
		allocate_tickets(ans);
		return s;
	}
	int s = 0;
	vector<vector<int>> ans(n, vector<int>(m, -1));
	
	for( int i = 0; i < n; i++){
	       sort( vec[i].start(), vec[i].end());
	}
	   
	for( int j = 0; j < k; j++){
	    int tr = 0;
	   for( int i = 0; i < n; i++){
	       tr += vec[i][j];
	       ans[i][j] = j;
	   }
	   if(tr > n/2) s+= n - n/2;
	   else s += n/2;
	}
	allocate_tickets(ans);

}

Compilation message (stderr)

tickets.cpp: In function 'long long int find_maximum(int, std::vector<std::vector<int> >)':
tickets.cpp:28:29: error: '__gnu_cxx::__alloc_traits<std::allocator<std::vector<int> >, std::vector<int> >::value_type' {aka 'class std::vector<int>'} has no member named 'start'
   28 |                sort( vec[i].start(), vec[i].end());
      |                             ^~~~~
tickets.cpp:42:1: warning: control reaches end of non-void function [-Wreturn-type]
   42 | }
      | ^