This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define int long long
typedef long long ll;
const int M = 2e7 + 5, MOD = 1e9+7;
int grid[3000][3000], vis[M], cnt;
vector<int> node[M];
vector<int> ans;
void dfs(int s) {
ans.push_back(s);
vis[s] = true;
cnt++;
for (int i:node[s]) {
if (!vis[i]) dfs(i);
}
}
signed main() {
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
srand(time(0));
int n, t;
cin >> n >> t;
// vector<pair<int, int>> v(n);
// for (auto&[a, b]:v) {
// cin >> a >> b;
// a += 1000;
// b += 1000;
// }
// for (int i = 0; i < n; i++) {
// grid[v[i].first][v[i].second] = i+1;
// }
// int ind = 1;
// for (auto[a, b]:v) {
// for (int i = -1; i <= 1; i++) {
// for (int j = -1; j <= 1; j++) {
// if (!i && !j) continue;
// if (grid[a+i][b+j]) node[ind].push_back(grid[a+i][b+j]);
// }
// }
// ind++;
// }
// for (int i = 1; i <= n; i++) {
// sort(node[i].rbegin(), node[i].rend());
// }
// dfs(n);
// reverse(ans.begin(), ans.end());
// if (cnt == n) {
// cout << "YES" << endl;
// for (int i:ans) cout << i << endl;
cout << "NO" << endl;
return 0;
}
/*
3
2 1 2
0
0
3
1 2
1 1
2 2
4
1 1 1 4
*/
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