//struct Edge {int u, v, weight;bool operator<(Edge const& other) {return weight < other.weight;}};
#include <bits/stdc++.h>
#define endl "\n"
#define ll long long
#define sp ' '
#define pb push_back
#define ar for(int i=1;i<=n;i++)
using namespace std;
ll t=1;
const ll N=3e5+100;
ll n,m,q,k;
ll a[N],b[N],c[N];
bool vis[N];
ll mx=0;
vector<int>v[N];
void dfs(ll x,ll y)
{
vis[x]=1;mx=max(mx,y);
for(auto i:v[x])
{
if(!vis[i]){dfs(i,y+1);}
}
}
ll ans=0;
void solve()
{
cin>>n>>m;
while(m--)
{
ll x,y;cin>>x>>y;
v[x].push_back(y);
v[y].push_back(x);
}
for(int i=1;i<=n;i++)
{
if(!vis[i]&&v[i].size()==1)
{mx=0;
dfs(i,1);
ans+=mx;
}
}
cout<<ans<<endl;return;
}
int main()
{
//freopen("shell.in", "r", stdin);
// freopen("shell.out", "w", stdout);
ios::sync_with_stdio(NULL);
cin.tie(NULL);cout.tie(NULL);
// cin>>t;
while(t--){solve();}
return 0;
}
//09:00 :: 9:45
//10:30 ::
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
5 ms |
9564 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
28 ms |
17908 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
2 ms |
8792 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
2 ms |
8796 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
5 ms |
9564 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |