Submission #800123

#	Time	Username	Problem	Language	Result	Execution time	Memory
800123		alvingogo	Carnival Tickets (IOI20_tickets)	C++14	Compilation error	0 ms	0 KiB

tickets

#include "tickets.h"
#include <vector>
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#define fs first
#define sc second
#define p_q priority_queue
using namespace std;

long long find_maximum(int k, vector<vector<int>> x) {
	int n = x.size();
	int m = x[0].size();
	vector<int> v;
	ll ret=0;
	vector<vector<int> > ans(n,vector<int>(m));
	for(int i=0;i<n;i++){
		ans[i][0]=1;
		v.push_back(x[i][0]);
	}
	sort(v.begin(),v.end());
	for(int i=0;i<n/2;i++){
		ret-=v[i];
		ret+=v[i+n/2];
	}
	allocate_tickets(ans);
	return 1;
}

Compilation message (stderr)

tickets.cpp: In function 'long long int find_maximum(int, std::vector<std::vector<int> >)':
tickets.cpp:14:2: error: 'll' was not declared in this scope
   14 |  ll ret=0;
      |  ^~
tickets.cpp:22:3: error: 'ret' was not declared in this scope
   22 |   ret-=v[i];
      |   ^~~