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- #include <iostream>
- #include <cstring>
- using namespace std;
- int main()
- {
- bool znae[101][101]; //znae[a][b] е true ако а гу знае аферу на b
- memset(znae,false,101*101);
- for(int i=0;i<101;i++)
- znae[i][i]=true;
- int n,m;
- cin>>n>>m;
- for(int i=0;i<m;i++)
- {
- int a,b;
- cin>>a>>b;
- for(int j=0;j<=n;j++)
- if(znae[a][j])
- znae[b][j]=true;
- else if(znae[b][j])
- znae[a][j]=true;
- }
- int najvekeTajni=0,brojac;
- for(int i=0;i<=n;i++)
- {
- brojac=0;
- for(int j=0;j<=n;j++)
- if(znae[i][j])
- brojac++;
- najvekeTajni=max(najvekeTajni,brojac);
- }
- cout<<najvekeTajni-1;
- return 0;
- }
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