Cod sursa(job #333181)

Utilizator savimSerban Andrei Stan savim Data 21 iulie 2009 17:31:03
Problema Oras Scor 55
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.91 kb
#include <stdio.h>

#define MAX_N 256

int n;
int A[MAX_N][MAX_N];

void cit() {
    freopen("oras.in", "r", stdin);
    freopen("oras.out", "w", stdout);
    
    scanf("%d", &n);
}

inline int poz(int x) {
    if (x % n) return x % n;
    else return n;
}

void solve() {
    if (n % 2 == 1) {
        for (int i = 1; i <= n; i++)
            A[i][poz(i + 1)] = 1;
        for (int i = 1; i <= n; i++) {
            int j = poz(i + 3);
            
            while (j != i) {
                if (!A[j][i]) A[i][j] = 1;
                j = poz(j + 2);
            }
        }
    }
}

void write() {
    if (n == 4) {
        printf("-1\n");
        return;
    }
    
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= n; j++) 
            printf("%d", A[i][j]);
        printf("\n");
    }
}

int main() {

    cit();
    solve();
    write();

    return 0;
}