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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#687789#6438. CrystalflyGLLF234WA 1ms7804kbC++201.4kb2024-10-29 21:15:342024-10-29 21:15:34

Judging History

你现在查看的是最新测评结果

  • [2024-10-29 21:15:34]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:7804kb
  • [2024-10-29 21:15:34]
  • 提交

answer

#include<bits/stdc++.h>
#define int long long
using namespace std;
const int inf=0x7f7f7f7f;
int a[100005];
int t[100005];
int dp[100005][2];
vector<int> p[100005];
void dfs(int u,int fa){
    dp[u][1]=dp[u][0]=a[u];
    int mx1=-inf,mx2=-inf;
    for(auto v: p[u]){
        if(v==fa) continue;
        dfs(v,u);
        dp[u][0]+=dp[v][1]-a[v];
        int temp=dp[v][0];
        if(temp>mx1) mx2=mx1,mx1=temp;
        else if(temp>mx2) mx2=temp;
    }
    for(auto v:p[u]){
        if(v==fa) continue;
        dp[u][1]=max(dp[u][1],dp[u][0]+a[v]);
        if(t[v]==3){
            // cout<<dp[u][1]<<" "<<dp[u][0]<<endl;
            if(dp[v][0]==mx1) dp[u][1]=max(dp[u][1],dp[u][0]+a[v]+mx2);
            else dp[u][1]=max(dp[u][1],dp[u][0]+mx1+a[v]);
        }
    }
    // cout<<mx1<<" "<<mx2<<endl;
    // cout<<dp[u][1]<<" "<<dp[u][0]<<endl;
}
void slove(){
    int n;
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i];
        dp[i][0]=dp[i][1]=0;
        p[i].clear();
    }
    for(int i=1;i<=n;i++){
        cin>>t[i];
    }
    for(int i=1;i<n;i++){
        int u,v;
        cin>>u>>v;
        p[u].push_back(v);
        p[v].push_back(u);
    }
    dfs(1,0);
    cout<<dp[1][1]<<endl;
    return ;
}
signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    int T;
    cin>>T;
    while(T--){
        slove();
    }
    return 0;
}

详细

Test #1:

score: 100
Accepted
time: 1ms
memory: 5752kb

input:

2
5
1 10 100 1000 10000
1 2 1 1 1
1 2
1 3
2 4
2 5
5
1 10 100 1000 10000
1 3 1 1 1
1 2
1 3
2 4
2 5

output:

10101
10111

result:

ok 2 number(s): "10101 10111"

Test #2:

score: -100
Wrong Answer
time: 0ms
memory: 7804kb

input:

10
6
8 1 1 5 8 9
2 1 2 2 2 2
1 2
2 3
2 4
1 5
2 6
6
6 4 4 1 3 6
2 1 3 3 3 3
1 2
1 3
3 4
4 5
5 6
6
10 5 1 8 5 1
1 3 1 2 2 2
1 2
2 3
2 4
2 5
3 6
10
6 8 8 9 6 9 5 6 6 4
2 1 3 3 2 2 2 2 3 1
1 2
1 3
3 4
4 5
5 6
4 7
2 8
7 9
9 10
7
10 9 1 5 7 5 4
1 1 1 2 1 3 2
1 2
1 3
3 4
3 5
5 6
1 7
5
7 1 1 4 2
3 1 3 2 2
1...

output:

25
24
24
62
31
15
16
28
19
19

result:

wrong answer 4th numbers differ - expected: '56', found: '62'