Submission #475215

#	Time	Username	Problem	Language	Result	Execution time	Memory
475215		bigo	Trampoline (info1cup20_trampoline)	C++14	0 / 100	1269 ms	19836 KiB

trampoline

#include <iostream>
#include <vector>		
#include <cmath>
#include <set>
using namespace std;
#define pii pair<int, int>
vector<vector<int>>vec;
vector<bool>visit;
void dfs(int v) {
	visit[v] = true;
	for (auto u:vec[v]) {
		if (!visit[u])
			dfs(u);
	}
}
int main() {
	int r, c, n;
	cin >> r >> c >> n;
	set<pii>green;
	set<int>green1;
	int a, b;
	for (int i = 0; i < n; i++) {
		cin >> a >> b;
		a--, b--;
		green.insert({ a,b });
		green1.insert(a * c + b);
	}
	int t;
	cin >> t;
	while (t--) {
		int y1, x1, y2, x2;
		cin >> y1 >> x1 >> y2 >> x2;
		y1--, x1--, y2--, x2--;
		auto it = green1.lower_bound(y1 * c + x1);
		if (it == green1.end())
			cout << "NO";
		else {
			if (*it <= y1 * c + x2)
				cout << "YES";
			else
				cout << "NO";
		}
		cout << endl;
	}
}

• Subtask 1: 0 / 23
• Subtask 2: 0 / 20
• Subtask 3: 0 / 11
• Subtask 4: 0 / 19
• Subtask 5: 0 / 27