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QOJ
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 |
---|---|---|---|---|---|---|---|---|---|
#624376 | #6438. Crystalfly | wwww22# | WA | 1ms | 7748kb | C++20 | 1.2kb | 2024-10-09 15:42:17 | 2024-10-09 15:42:17 |
Judging History
answer
#include<bits/stdc++.h>
#define ll long long
#define fo(i,a,b) for(ll (i)=(a);(i)<=(b);(i)++)
#define fd(i,a,b) for(ll (i)=(a);(i)>=(b);(i)--)
#define eb emplace_back
using namespace std;
const int N=1e5+10;
ll a[N],t[N],f[N],g[N],h[N][2];
vector<int> e[N];
void dfs(int x,int fa)
{
ll sum=0,mA=0,tmp;
for(auto y:e[x]){
if(y==fa) continue;
dfs(y,x);
sum+=f[y]-a[y];
mA=max(mA,a[y]);
tmp=2*a[y]+g[y]-f[y];
if(tmp>h[x][0]){
h[x][1]=h[x][0];
h[x][0]=tmp;
}
else if(tmp>h[x][1]) h[x][1]=tmp;
}
f[x]=max(f[x],sum+mA+a[x]);
for(auto y:e[x])
{
if(y==fa) continue;
g[x]+=f[y];
if(t[y]==3)
{
tmp=2*a[y]+g[y]-f[y];
if(tmp==h[x][0])
{
f[x]=max(f[x],a[x]+a[y]+sum+h[x][1]);
}
else
{
f[x]=max(f[x],a[x]+a[y]+sum+h[x][0]);
}
}
}
}
int n;
void solve()
{
cin>>n;
fo(i,1,n) cin>>a[i];
fo(i,1,n) {
h[i][0]=h[i][1]=0;
f[i]=g[i]=0;
e[i].clear();
cin>>t[i];
}
int x,y;
fo(i,2,n) {
cin>>x>>y;
e[x].eb(y);
e[y].eb(x);
}
dfs(1,0);
cout<<f[1]<<"\n";
}
int main(){
ios::sync_with_stdio(false);
cin.tie(0),cout.tie(0);
int T=1;
cin>>T;
while(T--) solve();
return 0;
}
/*
5
1 1 1 1 1
3 3 1 3 1
1 2
1 3
2 4
2 5
*/
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 7728kb
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: 1ms
memory: 7748kb
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'