#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,l; cin>>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++){ h=0,l=0; for(int j=0;j<n;j++) h+=a[i][j],l+=a[j][i]; if(h%2==1||l%2==1){ cout<<"Corrupt";return 0;} } cout<<"OK"; return 0; }