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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#573722 | #8948. 报复社会 | Akagishigeru | 0 | 3ms | 14020kb | C++14 | 943b | 2024-09-18 19:48:20 | 2024-09-18 19:48:20 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int maxn=5e5+10;
int n,head[maxn],tot,f[maxn],a[maxn],sum[maxn],siz[maxn];
struct edge{
int t,nxt;
}e[maxn];
void add(int u,int v){
e[++tot]={v,head[u]};
head[u]=tot;
}
void dfs(int u){
siz[u]=1;
if(!head[u]){
sum[u]=f[u]=a[u];
return;
}
for(int i=head[u];i;i=e[i].nxt){
dfs(e[i].t);
siz[u]+=siz[e[i].t];
sum[u]+=sum[e[i].t];
}
if(siz[u]-1-sum[u]>sum[u]) f[u]=0;
else if(siz[u]-1-sum[u]<sum[u]) f[u]=1;
else f[u]=n%2;
sum[u]+=f[u];
}
void solve(int test){
cin>>n;
tot=0;
for(int i=1;i<=n;i++) head[i]=a[i]=f[i]=sum[i]=0;
for(int i=2,fa;i<=n;i++){
scanf("%d",&fa);
add(fa,i);
}
for(int i=1;i<=n;i++) scanf("%d",&a[i]);
dfs(1);
if(f[1]) puts("no");
else puts("yes");
}
int main(){
// freopen("alphago.in","r",stdin);
// freopen("alphago.out","w",stdout);
int c,t;
cin>>c>>t;
for(int i=1;i<=t;i++) solve(i);
}
Details
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Subtask #1:
score: 0
Wrong Answer
Test #1:
score: 0
Wrong Answer
time: 3ms
memory: 14020kb
input:
1 19 1 2 3 3 2 6 7 7 6 6 6 2 2 2 1 1 1 1 0 0 0 0 0 0 0 1 1 0 0 1 1 1 1 0 0 0 0
output:
no no no no no no no no no no no no no no no no no no no
result:
wrong answer 1st words differ - expected: 'Bob', found: 'no'
Subtask #2:
score: 0
Wrong Answer
Test #50:
score: 0
Wrong Answer
time: 0ms
memory: 13932kb
input:
10000 49 1 2 2 1 5 5 5 5 5 5 1 12 12 12 12 12 12 1 19 19 19 19 19 19 19 1 27 27 1 1 31 1 33 33 33 33 33 33 33 1 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 1 1 1 1 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 0 0 1 0 1 0 1 1 1 1 1 1 1 1 1 1 50 1 2 2 2 2 2 1 8 8 8 1 12 1 1 15 15 15 15 1 1 21 21 21 21 1 26 1 1 29 29...
output:
no no no no no no no no no no no no no no no no yes yes yes yes yes yes yes yes yes yes yes yes yes yes no no yes yes yes yes no no no no no yes yes no no yes no no yes
result:
wrong answer 1st words differ - expected: 'Bob', found: 'no'
Subtask #3:
score: 0
Wrong Answer
Test #73:
score: 0
Wrong Answer
time: 1ms
memory: 13940kb
input:
10000 50 1 2 1 4 5 6 5 4 9 4 11 4 1 14 15 16 16 16 15 14 21 21 21 14 14 14 14 14 1 30 30 30 30 30 1 36 37 37 37 36 41 41 41 36 1 1 1 1 1 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 1 1 0 1 1 1 1 1 1 1 1 0 1 0 1 0 1 0 0 0 0 1 0 0 0 0 1 1 0 1 0 1 50 1 2 3 4 5 4 7 8 7 4 11 12 11 14 11 16 11 18 11 4 21 4 4 4 3 ...
output:
no no no no no no yes yes yes yes yes yes yes yes yes yes yes yes yes yes yes yes no no no no no no no yes yes yes yes yes yes yes yes yes yes no no yes no no no no no no no no
result:
wrong answer 1st words differ - expected: 'Alice', found: 'no'
Subtask #4:
score: 0
Skipped
Dependency #1:
0%