#include <iostream>
#include <string>
#include <math.h>
#include <sstream>
#include <cstdio>
#include <algorithm>
#include <set>
#include <vector>
using namespace std;
int N, M, visited[100005], cnt[100005];
vector<int> G[100005];
void dfs(int u, int p) {
visited[u] = 1;
for(int i = 0;i<G[u].size();i++) {
int v = G[u][i];
if(visited[v] && v != p)
cnt[v]++;
if(visited[v]) continue;
dfs(v, u);
}
}
int main() {
scanf("%d %d",&N, &M);
for(int i = 0;i<M;i++) {
int u, v;
scanf("%d %d",&u, &v);
G[u].push_back(v);
G[v].push_back(u);
}
dfs(1, -1);
int ok = 1;
for(int i = 1;i<=N;i++) {
if(cnt[i] > 1)
ok = 0;
}
if(ok)
printf("Cactus\n");
else
printf("Not cactus\n");
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
4796 KB |
Output is correct |
2 |
Correct |
0 ms |
4796 KB |
Output is correct |
3 |
Correct |
0 ms |
4928 KB |
Output is correct |
4 |
Correct |
0 ms |
4796 KB |
Output is correct |
5 |
Correct |
0 ms |
4796 KB |
Output is correct |
6 |
Correct |
0 ms |
4928 KB |
Output is correct |
7 |
Correct |
4 ms |
4928 KB |
Output is correct |
8 |
Correct |
4 ms |
4928 KB |
Output is correct |
9 |
Correct |
0 ms |
4928 KB |
Output is correct |
10 |
Correct |
32 ms |
7700 KB |
Output is correct |
11 |
Correct |
24 ms |
7548 KB |
Output is correct |
12 |
Correct |
36 ms |
8900 KB |
Output is correct |
13 |
Correct |
44 ms |
8200 KB |
Output is correct |
14 |
Correct |
44 ms |
8000 KB |
Output is correct |
15 |
Correct |
48 ms |
9816 KB |
Output is correct |
16 |
Correct |
40 ms |
8128 KB |
Output is correct |
17 |
Correct |
32 ms |
8960 KB |
Output is correct |
18 |
Correct |
52 ms |
11044 KB |
Output is correct |
19 |
Correct |
76 ms |
11828 KB |
Output is correct |
20 |
Correct |
32 ms |
8452 KB |
Output is correct |
21 |
Correct |
48 ms |
8184 KB |
Output is correct |
22 |
Correct |
40 ms |
10232 KB |
Output is correct |
23 |
Correct |
0 ms |
4796 KB |
Output is correct |
24 |
Correct |
0 ms |
4796 KB |
Output is correct |
25 |
Incorrect |
4 ms |
5296 KB |
Output isn't correct |
26 |
Halted |
0 ms |
0 KB |
- |