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- #include <iostream>
- using namespace std;
- int n,m,i,j,x,y,k,a[105][105];
- int main()
- {
- cin>>n>>m;
- for(i=1;i<=m;++i)
- {
- cin>>x>>y;
- a[x][y]=1;
- }
- for(i=1;i<=n;++i)
- for(j=1;j<=n;++j)
- for(k=1;k<=n;++k)
- if((a[i][j]==1 || a[j][i]==1 ) && (a[k][j]==1 || a[j][k]==1 ) && (a[k][i]==1 || a[i][k]==1) )
- cout<<i<<" "<<j<<" "<<k<<endl;
- return 0;
- }
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