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# 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++){ sum=0; b=0; 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<<"Corrupt"; return 0;} } cout<<"OK"; return 0; }