Submission #955059

#	Time	Username	Problem	Language	Result	Execution time	Memory
955059		Trisanu_Das	Carnival Tickets (IOI20_tickets)	C++17	Compilation error	0 ms	0 KiB

tickets

#include <bits/stdc++.h>
#include "tickets.h"
using namespace std;
const int N=1505;

int n, m, d[N], s[N];
long long sum;
vector<pair<int, int> > v, l;
long long find_maximum(int k, vector<vector<int> > x){
	n = x.size(); m = x[0].size();
	vector<vector<int> > ans(n, vec(m, -1));
	for(int i = 0; i < n; i++){
		for(int j = 0; j < k; j++) {
          sum += x[i][m - 1 - j]; 
          v.push_back(make_pair(x[i][j] + x[i][m - k + j], i));
        }
    }
	sort(v.begin(), v.end());
	for(int i = 0; i < n * k / 2; i++) {
      sum -= v[i].first;
      d[v[i].second]++;
    }
	for(int i = 0; i < n; i++){
		l.clear();
		for(int j = 0; j < k; j++) l.push_back(make_pair(s[j], j));
		sort(l.begin(), l.end());
		for(int j = 0; j < k; j++){
			if(j < d[i]) {
              ans[i][j] = l[j].second; 
              s[l[j].second]++;
            } else ans[i][m - k + j] = l[j].second;
        }
	}
	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:11:30: error: 'vec' was not declared in this scope
   11 |  vector<vector<int> > ans(n, vec(m, -1));
      |                              ^~~