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Cod sursa(job #578654)
#include <fstream.h>
int n, i,j,cnt;
int m[200][200];
main(){
freopen("oras.in", "r", stdin);
freopen("oras.out", "w", stdout);
scanf("%d", &n);
if(n%2==0)
printf("-1");
else{
for(i=1;i<=n;i++){
cnt=1;
for(j=i;cnt<=(n-1)/2;cnt++){
if(j==n)
j=1;
else
j++;
m[i][j]=1;}}
for(i=1;i<=n;i++){
for(j=1;j<=n;j++)
printf("%d ", m[i][j]);
printf("\n");}
}
}