#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ int n,a[101][101],h=0,l=0; cin>>n; for(int i=1;i<=n;i++){ for(int j=1;j<=n;j++){ cin>>a[i][j]; }} for(int i=1;i<=n;i++){ for(int j=1;j<=n;j++){ if(a[i][j]){ h++; } } for(int j=1;j<=n;j++){ if(a[j][i]){ l++; } } if(h%2!=0||l%2!=0){ cout<<"Corrupt"; return 0; } } cout<<"OK"; return 0; }