bipartite graph DSA using CPP
#include<bits/stdc++.h>
using namespace std;
#define ll long long int
vector<ll> arr[1000];
ll vis[1000],color[1000];
bool dfs(ll v,ll col)
{
vis[v]=1;
color[v]=col;
for(ll i=0;i<arr[v].size();i++)
{
ll child;
child=arr[v][i];
if(vis[child]==0)
{
if(dfs(child,col^1)==false)return false;
}
else if(color[v]==color[child])return false;
}
return true;
}
int main()
{
ll edge,node;
cin>>node>>edge;
while(edge--)
{
ll x,y;
cin>>x>>y;
arr[x].push_back(y);
arr[y].push_back(x);
}
bool r;
r=dfs(1,1);
if(r==true)cout<<"YES\n";
else cout<<"NO\n";
return 0;
}
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