Submission #1049454

#	Time	Username	Problem	Language	Result	Execution time	Memory
1049454		TAhmed33	Teams (IOI15_teams)	C++98	0 / 100	4046 ms	58384 KiB

teams

#include "teams.h"
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 5e5 + 25;
int n;
array <int, 2> a[MAXN];
vector <array <int, 3>> ee[MAXN];
void init(int N, int A[], int B[]) {
	n = N;
	for (int i = 0; i < n; i++) {
		a[i][0] = A[i];
	}
	for (int i = 0; i < n; i++) {
		a[i][1] = B[i];
	}
	sort(a, a + n);
}

int can (int m, int k[]) {
	int sum = 0;
	for (int i = 0; i < m; i++) {
		sum += k[i];
	}
	for (int i = 1; i <= n; i++) {
		ee[i].clear();
	}
	for (int i = 0; i < n; i++) {
		ee[a[i][0]].push_back({a[i][1], i, 1});
		ee[a[i][1] + 1].push_back({a[i][1], i, -1});
	}
	sort(k, k + m);
	int ptr = 1;
	set <array <int, 2>> cur;
	for (int i = 0; i < m; i++) {
		while (ptr <= k[i]) {
			for (auto j : ee[ptr]) {
				if (j[2] == 1) {
					cur.insert({j[0], j[1]});
				} else {
					cur.erase({j[0], j[1]});
				}
			}
			ptr++;
		}
		if (cur.size() < k[i]) {
			return 0;
		}
		for (int j = 0; j < k[i]; j++) {
			cur.erase(--cur.end());
		}
	}
	return 1;
}

Compilation message (stderr)

teams.cpp: In function 'int can(int, int*)':
teams.cpp:45:18: warning: comparison of integer expressions of different signedness: 'std::set<std::array<int, 2> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   45 |   if (cur.size() < k[i]) {
      |       ~~~~~~~~~~~^~~~~~

• Subtask 1: 0 / 21
• Subtask 2: 0 / 13
• Subtask 3: 0 / 43
• Subtask 4: 0 / 23