Submission #782879

#	Time	Username	Problem	Language	Result	Execution time	Memory
782879		christinelynn	The Xana coup (BOI21_xanadu)	C++17	0 / 100	18 ms	1108 KiB

xanadu

#include<bits/stdc++.h>
#define int long long
using namespace std;
signed main() {
  ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  int n; cin >> n; vector<int> c(n);
  while(--n) {
    int u, v; cin >> u >> v; --u; --v;}
  int cnt=0;
  for(int &p : c) cin >> p, cnt+=(p==1);
  cout << cnt/3 << endl;
    return 0;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3: 0 / 10
• Subtask 4: 0 / 40
• Subtask 5: 0 / 30