Submission #926343

#	Time	Username	Problem	Language	Result	Execution time	Memory
926343		OAleksa	Passport (JOI23_passport)	C++14	0 / 100	2082 ms	9520 KiB

passport

#include <bits/stdc++.h>
using namespace std;
#define f first
#define s second
#define int long long
const int N = 2e5 + 69;
int n, l[N], r[N], q;
signed main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  int tt = 1;
  //cin >> tt;
  while (tt--) {
  	cin >> n;
  	for (int i = 1;i <= n;i++)
  		cin >> l[i] >> r[i];
  	cin >> q;
  	for (int i = 1;i <= q;i++) {
  		int x;
  		cin >> x;
  		vector<int> vis;
  		vector<int> was(n + 1);
  		int c = 1;
  		was[x] = 1;
  		int ans = 0;
  		vis.push_back(x);
  		while (c < n) {
  			int bst = 0, m = -1;
  			for (auto u : vis) {
  				int s = 0;
  				for (int j = l[u];j <= r[u];j++) 
  					s += !(was[j]);
  				if (s > bst) {
  					bst = s;
  					m = u;
  				}
  			}
  			if (m == -1) {
  				ans = -1;
  				break;
  			}
  			++ans;
  			for (int j = l[m];j <= r[m];j++) {
  				if (!was[j]) {
  					was[j] = 1;
  					c++;
  					vis.push_back(j);
  				}
  			}
  		}
  		cout << ans << '\n';
  	}
  }
  return 0;
}

• Subtask 1: 0 / 6
• Subtask 2: 0 / 16
• Subtask 3: 0 / 24
• Subtask 4: 0 / 8
• Subtask 5: 0 / 46