# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
847415 | 2023-09-09T15:36:59 Z | MinaRagy06 | The Xana coup (BOI21_xanadu) | C++17 | 0 ms | 0 KB |
#include <bits/stdc++.h> using namespace std; typedef int64_t ll; int main() { ios_base::sync_with_stdio(0), cin.tie(0); int n; cin >> n; for (int i = 1; i < n; i++) { int a, b; cin >> a >> b; } int a[n]; for (int i = 0; i < n; i++) { cin >> a[i]; } int cnt = 0; for (int i = 0; i < n; i++) { if (a[i] && i != 2 && n - 1 - i != 2) { cout << "impossible"; return 0; } cnt += a[i]; } cout << a[i] << '\n'; return 0; }