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Cod sursa(job #57332)
#include <stdio.h>
#define nmax 205
int n,i,j,start;
char a[nmax][nmax];
int main() {
freopen("oras.in","r",stdin);
freopen("oras.out","w",stdout);
scanf("%d",&n);
if(n == 4) {
printf("-1\n");
return 0;
}
if(n % 2 == 1) {
start = 3;
a[1][1] = 0; a[1][2] = 1; a[1][3] = 0;
a[2][1] = 0; a[2][2] = 0; a[2][3] = 1;
a[3][1] = 1; a[3][2] = 0; a[3][3] = 0;
}
else {
start = 6;
a[1][1] = 0; a[1][2] = 1; a[1][3] = 1; a[1][4] = 1; a[1][5] = 0; a[1][6] = 0;
a[2][1] = 0; a[2][2] = 0; a[2][3] = 1; a[2][4] = 1; a[2][5] = 1; a[2][6] = 0;
a[3][1] = 0; a[3][2] = 0; a[3][3] = 0; a[3][4] = 1; a[3][5] = 1; a[3][6] = 1;
a[4][1] = 0; a[4][2] = 0; a[4][3] = 0; a[4][4] = 0; a[4][5] = 1; a[4][6] = 1;
a[5][1] = 1; a[5][2] = 0; a[5][3] = 1; a[5][4] = 0; a[5][5] = 0; a[5][6] = 1;
a[6][1] = 1; a[6][2] = 1; a[6][3] = 1; a[6][4] = 0; a[6][5] = 0; a[6][6] = 0;
for(;;) ;
}
for(start += 2;start <= n; start += 2) {
a[start - 1][start] = 1;
for(i = 1; i < start - 1; i++) a[i][start] = 0, a[start][i] = 1;
for(i = 1; i < start - 1; i++) a[i][start - 1] = 1,a[start - 1][i] = 0;
}
for(i = 1; i <= n; i++) {
for(j = 1; j <= n; j++) printf("%d",a[i][j]);
printf("\n");
}
return 0;
}