Submission #1004949

#	Time	Username	Problem	Language	Result	Execution time	Memory
1004949		pavement	Tiles (BOI24_tiles)	C++17	0 / 100	106 ms	20088 KiB

Main

#include <bits/stdc++.h>
using namespace std;

using ll = long long;

#define pb push_back

int N, M, min_y = (int)1e9;
vector<int> try_x;
map<int, vector<int> > vec;

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> N >> M;
	for (int i = 1, x, y; i <= N; i++) {
		cin >> x >> y;
		vec[x].pb(y);
		if (x != 0) {
			try_x.pb(x - 1);
		}
		try_x.pb(x);
	}
	int ans = 0;
	sort(try_x.begin(), try_x.end());
	try_x.erase(unique(try_x.begin(), try_x.end()), try_x.end());
	for (auto x : try_x) {
		int prv = min_y;
		for (auto y : vec[x]) {
			min_y = min(min_y, y);
		}
		if (prv != min_y) {
			if (x % 2 == 1 || min_y % 2 == 1) {
				break;
			}
		}
		if (x % 2 == 0 && min_y % 2 == 0) {
			ans = x;
		}
	}
	cout << ans << '\n';
}

• Subtask 1: 0 / 4
• Subtask 2: 0 / 9
• Subtask 3: 0 / 11
• Subtask 4: 0 / 19
• Subtask 5: 0 / 22
• Subtask 6: 0 / 25
• Subtask 7: 0 / 10