#include<stdio.h>int main(){int n,a[15][15],fail;while(scanf("%d",&n)&&n){int i,j,k,flag[1005]={0},sum;fail=0;for(i=0;i<n;i++){sum=0;for(j=0;j<n;j++){scanf("%d",&a[i][j]);if(flag[a[i][j]]==1){fail=1;}flag[a[i][j]]=1;sum+=a[i][j];}}int sum1,sum2,sum3,sum4;sum3=sum4=0;for(i=0;i<n&&!fail;i++){sum1=sum2=0;for(j=0;j<n;j++){sum1+=a[i][j];sum2+=a[j][i];}if(sum1!=sum)fail=1;if(sum2!=sum)fail=1;sum3+=a[i][i];sum4+=a[i][n-1-i];}if(sum3!=sum)fail=1;if(sum4!=sum)fail=1;if(fail)printf("Non");else printf("Yesn");}return 0;}
