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QOJ

ID	Problem	Submitter	Result	Time	Memory	Language	File size	Submit time	Judge time
#602575	#8720. BFS 序 0	frs^#	WA	57ms	22064kb	C++14	1.3kb	2024-10-01 10:51:45	2024-10-01 10:51:50

Judging History

你现在查看的是最新测评结果

[2024-10-01 10:51:50]
评测

测评结果：WA
用时：57ms
内存：22064kb

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[2024-10-01 10:51:45]
提交

answer

#include<iostream>
#include<cstdio>
#include<cstring>
#include<queue>
#include<vector>
using namespace std;
const int N = 5e5 + 5;

int n, qr, m, cnt[N], a[N];
bool f[N];
vector<int> ve[N];

struct qnode{
    int id, d;
    qnode(int id1 = 0, int d1 = 0){
        id = id1;
        d = d1;
    }
}tp;
queue<qnode> q;

int main(){
    scanf("%d", &n);
    int u;
    for(int i = 2; i <= n; i++){
        scanf("%d", &u);
        ve[u].push_back(i);
    }
    q.push(qnode(1, 1));
    while(!q.empty()){
        tp = q.front();
        q.pop();
        cnt[tp.id] = tp.d;
        int sz = ve[tp.id].size();
        for(int i = 0; i < sz; i++){
            q.push(qnode(ve[tp.id][i], tp.d + 1));
        }
    }
    scanf("%d", &qr);
    while(qr--){
        scanf("%d", &m);
        for(int i = 1; i <= m; i++){
            scanf("%d", &a[i]);
            f[a[i]] = 0;
        }
        bool flag = 1;
        f[a[1]] = 1;
        for(int i = 2; i <= m; i++){
            if(cnt[a[i]] < cnt[a[i - 1]]){
                flag = 0;
                break;
            }
            if(f[a[i]]){
                flag = 0;
                break;
            }
            f[a[i]] = 1;
        }
        if(!flag) printf("No\n");
        else printf("Yes\n");
    }
    return 0;
}

Source code, Language: C++14

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100

Accepted

time: 0ms

memory: 18596kb

input:

6
1 1 3 2 4
10
4 3 6 2 5
1 4
3 2 4 5
5 2 5 4 6 3
3 1 4 2
3 5 6 3
5 4 5 2 6 1
4 4 3 2 5
4 4 6 2 3
3 3 2 6

output:

No
Yes
Yes
No
No
No
No
No
No
Yes

result:

ok 10 token(s): yes count is 3, no count is 7

Test #2:

score: -100

Wrong Answer

time: 57ms

memory: 22064kb

input:

300000
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1...

output:

No
Yes
Yes
Yes
No
No
No
No
No
No
Yes
Yes
No
Yes
No
Yes
Yes
Yes
No
No
No
No
Yes
No
No
Yes
No
No
No
No
Yes
Yes
Yes
No
No
Yes
No
No
No
No
No
No
No
Yes
No
Yes
No
Yes
No
No
No
No
Yes
Yes
Yes
No
No
Yes
No
No
No
No
No
Yes
Yes
No
No
No
No
No
Yes
Yes
No
Yes
No
No
No
Yes
No
No
Yes
No
No
Yes
Yes
Yes
Yes
No
No
...

result:

wrong answer expected NO, found YES [87th token]