# include<iostream> using namespace std; int main(){ int n,sum=0,b=0; cin>>n; int a[n][n]; for(int i=0;i<n;i++){ for(int j=0;j<n;j++){ cin>>a[i][j]; } } for(int i=0;i<n;i++){ for(int j=0;j<n;j++){ if(a[i][j]==1) sum++; if(a[j][i]==1) b++; } } if(sum%2==0&&b%2==0) cout<<"OK"; else cout<<"Corrupt"; return 0; }