#include <bits/stdc++.h>
#define int ll
#define all(v) v.begin(), v.end()
// author : a1abay
using namespace std;
typedef long long ll;
typedef long double ld;
const int sz = 5e5 + 5;
const int inf = 1e9 + 7;
int n, m, u, v;
int used[sz];
char c;
vector<int> g[sz];
void dfs(int v)
{
used[v] = 1;
for(int i : g[v])
{
if(used[i]) continue;
dfs(i);
}
}
signed main()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin >> n >> m;
for(int i = 1; i <= m; i++)
{
cin >> u >> v >> c;
g[u].push_back(v);
g[v].push_back(u);
}
dfs(1);
bool ok = 1;
for(int i = 1; i <= n; i++) ok &= used[i];
cout << (ok ? n : 0) << '\n';
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
219 ms |
39036 KB |
Output is correct |
2 |
Correct |
3 ms |
12892 KB |
Output is correct |
3 |
Correct |
3 ms |
12892 KB |
Output is correct |
4 |
Correct |
3 ms |
12892 KB |
Output is correct |
5 |
Correct |
3 ms |
12892 KB |
Output is correct |
6 |
Correct |
46 ms |
20020 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12892 KB |
Output is correct |
2 |
Correct |
3 ms |
12892 KB |
Output is correct |
3 |
Incorrect |
3 ms |
12888 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12892 KB |
Output is correct |
2 |
Correct |
3 ms |
12892 KB |
Output is correct |
3 |
Incorrect |
3 ms |
12888 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12892 KB |
Output is correct |
2 |
Correct |
3 ms |
12892 KB |
Output is correct |
3 |
Incorrect |
3 ms |
12888 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
219 ms |
39036 KB |
Output is correct |
2 |
Correct |
3 ms |
12892 KB |
Output is correct |
3 |
Correct |
3 ms |
12892 KB |
Output is correct |
4 |
Correct |
3 ms |
12892 KB |
Output is correct |
5 |
Incorrect |
3 ms |
12888 KB |
Output isn't correct |
6 |
Halted |
0 ms |
0 KB |
- |