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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#638342 | #6438. Crystalfly | yld | WA | 0ms | 3872kb | C++20 | 1.8kb | 2024-10-13 15:40:58 | 2024-10-13 15:40:58 |
Judging History
answer
#include<bits/stdc++.h>
#define int long long
#define endl '\n'
using namespace std;
void solve()
{
int n;cin>>n;
vector<int> a(n+1),t(n+1);
for(int i=1;i<=n;i++) cin>>a[i];
for(int i=1;i<=n;i++) cin>>t[i];
vector<int> e[n+1];
for(int i=1;i<n;i++)
{
int u,v;
cin>>u>>v;
e[u].push_back(v);
e[v].push_back(u);
}
vector dp(n+1,vector<int>(2));
function<void(int,int)> dfs=[&](int u,int fa)
{
// cerr<<u<<endl;
int sum=0,maxn=0;
priority_queue<pair<int,int>> q1,q2;//q1表示依托 q2表示t=3的a[];
for(auto v:e[u])
{
if(v==fa) continue;
dfs(v,u);
q1.push({a[v]+dp[v][0]-dp[v][1],v});
if(t[v]==3) q2.push({a[v],v});
sum+=dp[v][1];
maxn=max(maxn,a[v]);
}
dp[u][0]=max(dp[u][0],sum);
if(q2.empty())
{
dp[u][1]=max(dp[u][1],maxn+sum);
}
else
{
auto [x_1,y_1]=q1.top();q1.pop();
auto [a_1,b_1]=q2.top();q2.pop();
if(y_1!=b_1) dp[u][1]=max(dp[u][1],x_1+a_1+sum);
else
{
if(q1.size())
{
auto [x_2,y_2]=q1.top();
dp[u][1]=max(dp[u][1],x_2+a_1+sum);
}
if(q2.size())
{
auto [a_2,b_2]=q2.top();
dp[u][1]=max(dp[u][1],x_1+a_2+sum);
}
}
}
};
dfs(1,0);
// for(int i=1;i<=n;i++)
// {
// cout<<dp[i][0]<<' '<<dp[i][1]<<endl;
// }
cout<<dp[1][1]+a[1]<<endl;
}
signed main()
{
cin.tie(0)->sync_with_stdio(0);
int t=1;
cin>>t;
while(t--) solve();
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3636kb
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: 3872kb
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 14 10 22 26 13 15 28 19 19
result:
wrong answer 2nd numbers differ - expected: '24', found: '14'