http://poj.org/problem?id=3435 /* @author: */ import java.util.Scanner; import java.util.Arrays; public class Main{ public static void main(String args[]) { Scanner sc=new Scanner(System.in); int n,i,j,k1,k2,p[][]=new int[101][101]; n=sc.nextInt(); int len=n*n; for(i=0;i< len;i++) for(j=0;j< len;j++) p[i][j]=sc.nextInt(); boolean bb[]=new boolean[101],is=true; //memset(bb,0,sizeof(bb)); for(i=0;i< len;i++) { Arrays.fill(bb,false); for(j=0;j< len;j++) { if(p[i][j]==0)continue; if(bb[p[i][j]])break; bb[p[i][j]]=true; } if(j< len)break; } if(i< len)is=false; for(j=0;j< len;j++) { Arrays.fill(bb,false); for(i=0;i< len;i++) { if(p[i][j]==0)continue; if(bb[p[i][j]])break; bb[p[i][j]]=true; } if(i< len)break; } if(j< len)is=false; for(i=0;i< len;i+=n) { for(j=0;j< len;j+=n) { Arrays.fill(bb,false); for(k1=i;k1< i+n;k1++) { for(k2=j;k2< j+n;k2++) { if(p[k1][k2]==0)continue; if(bb[p[k1][k2]])break; bb[p[k1][k2]]=true; } if(k2!=j+n)break; } if(k1!=i+n)is=false; if(is==false)break; } if(is==false)break; } if(is) System.out.println("CORRECT"); else System.out.println("INCORRECT"); } }
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