Submission #926348

#	Time	Username	Problem	Language	Result	Execution time	Memory
926348		OAleksa	Passport (JOI23_passport)	C++14	6 / 100	24 ms	7512 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, p[N];
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];
  		p[i] = max(p[i - 1], r[i]);
  	}
  	cin >> q;
  	for (int i = 1;i <= q;i++) {
  		int x;
  		cin >> x;
  		int ans = 1, ptr = r[1];
  		while (ptr != n) {
  			if (ptr == p[r[ptr]]) {
  				ans = -1;
  				break;
  			}
  			ptr = p[ptr];
  			++ans;
  		}
  		cout << ans << '\n';
  	}
  }
  return 0;
}

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