Submission #777359

#	Time	Username	Problem	Language	Result	Execution time	Memory
777359		_martynas	Carnival Tickets (IOI20_tickets)	C++14	Compilation error	0 ms	0 KiB

tickets

#include "tickets.h"
#include <vector>
#include <cmath>

using namespace std;

#define PB push_back
using ll = long long;

long long find_maximum(int k, vector<vector<int>> x) {
	/* sample interaction
	int n = x.size();
	int m = x[0].size();
	vector<vector<int>> answer;
	for (int i = 0; i < n; i++) {
		vector<int> row(m);
		for (int j = 0; j < m; j++) {
			if (j < k) {
				row[j] = j;
			} else {
				row[j] = -1;
			}
		}
		answer.push_back(row);
	}
	allocate_tickets(answer);
	return 1;
	*/
	int n = x.size();
	int m = x[0].size();
	vector<vector<int>> answer(n, vector<int>(m, -1));
	if(m == 1) {
        // subtask 1 (only a single way to pick everything)
        vector<int> A;
        for(int i = 0; i < n; i++) {
            A.PB(x[i][0]);
            answer[i][0] = 0;
        }
        sort(A.begin(), A.end());
        ll sum = 0;
        for(int a : A) {
            sum += abs(a-A[n/2]);
        }
        allocate_tickets(answer);
        return sum;
	}
	else if(k == 1) {
        // subtask 2

	}
	allocate_tickets(answer);
	return -1;
}

Compilation message (stderr)

tickets.cpp: In function 'long long int find_maximum(int, std::vector<std::vector<int> >)':
tickets.cpp:39:9: error: 'sort' was not declared in this scope; did you mean 'qsort'?
   39 |         sort(A.begin(), A.end());
      |         ^~~~
      |         qsort