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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#778783#8517. Interesting PathshuaxiamengjinWA 4ms28748kbC++14424b2024-11-24 16:14:592024-11-24 16:14:59

Judging History

你现在查看的是最新测评结果

  • [2024-11-24 16:14:59]
  • 评测
  • 测评结果：WA
  • 用时：4ms
  • 内存：28748kb
查看
  • [2024-11-24 16:14:59]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
int used[1001001];
vector<int>g[1001001];
int n,m;
int ans;
void dfs(int x){
    if(used[x]==1)return ;
    used[x]=1;ans--;
    for (auto y:g[x])ans++,dfs(y);
}
int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    cin>>n>>m;
    used[n]=1;
    for (int i=1,x,y;i<=m;i++)
    cin>>x>>y,g[x].push_back(y);
    ans=1;dfs(1);cout<<ans<<"\n";
}
Source code, Language: C++14

Details

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Test #1:

score: 100
Accepted
time: 4ms
memory: 28748kb

input:

5 7
1 3
3 5
1 2
2 3
3 4
4 5
2 4

output:

4

result:

ok 1 number(s): "4"

Test #2:

score: 0
Accepted
time: 4ms
memory: 28356kb

input:

5 3
1 3
2 3
2 5

output:

0

result:

ok 1 number(s): "0"

Test #3:

score: 0
Accepted
time: 0ms
memory: 27640kb

input:

2 0

output:

0

result:

ok 1 number(s): "0"

Test #4:

score: 0
Accepted
time: 0ms
memory: 27792kb

input:

2 1
1 2

output:

1

result:

ok 1 number(s): "1"

Test #5:

score: 0
Accepted
time: 0ms
memory: 27104kb

input:

10 20
2 8
5 8
4 8
3 10
3 7
2 7
2 5
1 7
6 9
6 10
2 4
5 9
2 10
3 9
7 8
4 10
3 6
2 3
5 7
6 8

output:

0

result:

ok 1 number(s): "0"

Test #6:

score: 0
Accepted
time: 3ms
memory: 27164kb

input:

10 30
8 9
1 5
3 6
4 6
4 7
6 9
3 5
5 6
3 8
1 4
3 4
7 8
2 4
4 5
1 8
6 10
2 10
9 10
1 2
8 10
2 7
2 8
2 5
7 9
2 6
4 8
1 7
1 6
7 10
4 9

output:

19

result:

ok 1 number(s): "19"

Test #7:

score: -100
Wrong Answer
time: 4ms
memory: 27068kb

input:

20 57
6 20
5 9
8 11
6 17
5 18
14 16
6 18
8 18
1 3
17 20
2 16
4 19
2 15
7 17
17 19
8 16
11 15
13 16
5 20
4 14
5 16
7 12
10 12
3 12
8 13
1 5
6 11
13 17
11 16
2 6
4 5
14 15
3 14
9 13
8 10
18 20
15 17
6 12
5 17
2 10
8 17
15 16
15 20
5 19
10 15
1 2
4 20
4 18
3 16
2 12
8 19
10 19
2 11
12 17
12 20
5 7
1 15

output:

29

result:

wrong answer 1st numbers differ - expected: '21', found: '29'
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