Submission #1316856

#	Time	Username	Problem	Language	Result	Execution time	Memory
1316856		mosnter777	Cijanobakterije (COCI21_cijanobakterije)	C++20	Compilation error	0 ms	0 KiB

Main

#include <iostream>
#include <vector>
#include"bits/stdc++."
#define ll long long
using namespace std;
vector<ll>g[100005];
bool v[100005];
ll d;
ll u;
void dfs(ll n, ll p, ll l){
	v[n]=true;
	if(l>d){
		d=l;
		u=n;
	}
	for(ll x:g[n]){
		if(x!=p) dfs(x,n,l+1);
	}
}

ll ok(ll s){
	d=-1;
	dfs(s,-1,1);
	ll st=u;
	d=-1;
	dfs(st,-1,1);
	return d;
}
int main()
{
	ll n;
	ll m;
	cin>>n>>m;
	for(ll i=0;i<m;i++)
	{
		ll x,y;
		cin>>x>>y;
		g[x].push_back(y);
		g[y].push_back(x);
	}
	ll t=0;
	for(ll i=1;i<=n;i++)
	{
		if(!v[i])
		{
			t+=ok(i);
		}
	}
	cout<<t<<endl;
	return 0;
}

Compilation message (stderr)

Main.cpp:3:9: fatal error: bits/stdc++.: No such file or directory
    3 | #include"bits/stdc++."
      |         ^~~~~~~~~~~~~~
compilation terminated.