oj.uz

답안 #778438

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
778438 2023-07-10T10:17:06 Z vjudge1 Deblo (COCI18_deblo) C++17
45 / 90
 1000 ms 16424 KB 
#include<bits/stdc++.h>
using namespace std;
#define lalala ios_base::sync_with_stdio(false);cin.tie(NULL);
#define endl "\n"
#define ll long long
#define pb push_back
#define N 100001
#define f first
#define s second
ll int cev=0;
int arr[N];
vector<int> adj[N];
int yukar[N],asa[N], isaret[N];
ll int dfs(int x,int once,int prevgel){
	ll int topla=0;
	if(isaret[x]==0)topla=prevgel^arr[x];
	for(auto u:adj[x]){
		if(u==once) continue;
		topla+=dfs(u,x,prevgel^arr[x]);
	}
	return topla;
}

vector<int> yol;
void uff(int x,int once){
	for(auto u:adj[x]){
		if(u!=once)uff(u,x);
	}
	yol.pb(x);
}
int main(){
	lalala;
	int n;cin>>n;
	for(int i=1;i<=n;i++)cin>>arr[i];
	for(int i=0;i<n-1;i++){
		int a,b;cin>>a>>b;
		adj[a].pb(b);
		adj[b].pb(a);
	}
	uff(1,0);
	reverse(yol.begin(),yol.end());
	ll int cev=0;
	for(auto u:yol){
		cev+=dfs(u,-1,0);
		//cout<<cev<<" "<<u<<endl;
		isaret[u]=1;
	}
	cout<<cev<<endl;
	


}

Subtask #1
45.0 / 90.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 7 ms 2644 KB Output is correct
5 Correct 8 ms 2736 KB Output is correct
6 Execution timed out 1089 ms 16424 KB Time limit exceeded
7 Execution timed out 1072 ms 16360 KB Time limit exceeded
8 Execution timed out 1085 ms 8156 KB Time limit exceeded
9 Execution timed out 1079 ms 7476 KB Time limit exceeded
10 Execution timed out 1082 ms 7152 KB Time limit exceeded