Submission #1096318

#	Time	Username	Problem	Language	Result	Execution time	Memory
1096318		vjudge1	The Xana coup (BOI21_xanadu)	C++14	0 / 100	57 ms	9812 KiB

xanadu

#include<bits/stdc++.h>
using namespace std;
const int maxn=2e5+10;
int n,a[maxn];
vector<int>e[maxn];
int main(){
	cin>>n;
	for(int i=1;i<n;i++){
		int u,v;
		cin>>u>>v;
		e[u].emplace_back(v);
		e[v].emplace_back(u);
	}
	for(int i=1;i<=n;i++)cin>>a[i];
	if(n%3==0)cout<<"impossible";
	else cout<<n-1;
	return 0;
}

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