Submission #862269

#	Time	Username	Problem	Language	Result	Execution time	Memory
862269		TAhmed33	Osumnjičeni (COCI21_osumnjiceni)	C++98	0 / 110	314 ms	1988 KiB

Main

#include <bits/stdc++.h>
using namespace std;
int main () {
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n;
	cin >> n;
	pair <int, int> arr[n + 1];
	for (int i = 1; i <= n; i++) cin >> arr[i].first >> arr[i].second;
	int q;
	cin >> q;
	while (q--) {
		int l, r;
		cin >> l >> r;
		set <pair <int, int>> cur;
		cur.insert(arr[l]);
		int cnt = 1;
		for (int i = l + 1; i <= r; i++) {
			auto x = cur.lower_bound({arr[i].second + 1, 0});
			if (x == cur.begin()) {
				cur.insert(arr[i]);
				continue;
			}
			x--;
			auto l = *x;
			if (arr[i].first >= l.first && arr[i].first <= l.second) {
				cur.clear(); cnt++;
			} else if (arr[i].second >= l.first && arr[i].second <= l.second) {
				cur.clear(); cnt++;
			}
			cur.insert(arr[i]);
		}
		cout << cnt << '\n';
	}
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 50