QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#764004 | #6438. Crystalfly | hikaritocm | WA | 2ms | 14240kb | C++14 | 1.3kb | 2024-11-19 23:18:31 | 2024-11-19 23:18:31 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define int long long
int dp[200005][2];
int a[200005], sum[200005];
int t[200005];
vector<int> adj[200005];
int n;
void dfs(int node, int pre){
multiset<int> s;
s.insert(0);
for(int i: adj[node]){
if(i!=pre){
dfs(i,node);
}
}
for(int i: adj[node]){
if(i==pre) continue;
sum[node]+=dp[i][0];
s.insert(sum[i]+a[i]-dp[i][0]);
}
int res=sum[node];
for(int i: adj[node]){
if(i==pre) continue;
int val=sum[i]+a[i]-dp[i][0];
s.erase(s.find(val));
dp[node][0]=max(dp[node][0],res+a[i]);
if(t[i]==3) dp[node][0]=max(dp[node][0],*s.rbegin()+res+a[i]);
}
dp[node][1]=dp[node][0]+a[node];
}
void solve(){
cin>>n;
for(int i=0; i<=n; i++){
adj[i].clear();
a[i]=0;
sum[i]=0;
dp[i][0]=dp[i][1]=0;
t[i]=0;
}
for(int i=1; i<=n; i++){
cin>>a[i];
}
for(int i=1; i<=n; i++){
cin>>t[i];
}
for(int i=0; i<n-1; i++){
int u,v;
cin>>u>>v;
adj[u].push_back(v);
adj[v].push_back(u);
}
dfs(1,0);
cout<<dp[1][1]<<endl;
}
signed main(){
ios::sync_with_stdio(0);
cin.tie(NULL);
cout.tie(NULL);
int t;
cin>>t;
while(t--) solve();
}
Details
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Test #1:
score: 100
Accepted
time: 2ms
memory: 14240kb
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: 13188kb
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 20 24 54 31 14 16 28 19 18
result:
wrong answer 2nd numbers differ - expected: '24', found: '20'