oj.uz

답안 #778647

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
778647 2023-07-10T14:12:24 Z vjudge1 Deblo (COCI18_deblo) C++17
45 / 90
 1000 ms 11024 KB 
#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
#include<iostream>
#include <vector>
#include <bitset>
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
int arr[N];
vector<int> adj[N];
bitset<100001>isaret;
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);
	ll int cev=0;
	for(int i=yol.size()-1;i>-1;i--){
		cev+=dfs(yol[i],-1,0);
		isaret[yol[i]]=1;
	}
	cout<<cev<<"\n";
}

Subtask #1
45.0 / 90.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 9 ms 2644 KB Output is correct
5 Correct 8 ms 2644 KB Output is correct
6 Execution timed out 1086 ms 11024 KB Time limit exceeded
7 Execution timed out 1086 ms 10956 KB Time limit exceeded
8 Execution timed out 1038 ms 7508 KB Time limit exceeded
9 Execution timed out 1076 ms 7116 KB Time limit exceeded
10 Execution timed out 1074 ms 6896 KB Time limit exceeded