#include <cstdio> #include <iostream> #include <cstring> using namespace std; const int MAXN = 110; int n, a[MAXN][MAXN]; int main(void) { scanf("%d",&n); if (n == 2) { printf("-1\n"); return 0; } for (int j = 0; j < n - 1; ++j) { a[0][j] = j + 1; } a[0][n - 1] = n * (n - 1) / 2; int jump = a[0][n - 1]; for (int i = 1; i < n; ++i) { for (int j = 0; j < n; ++j) a[i][j] = a[i - 1][j] + jump; } for (int j = 0; j < n; ++j) { a[n - 1][j] = n * a[n - 2][j]; for (int i = 0; i < n - 1; ++i) a[n - 1][j] -= a[i][j]; } for (int i = 0; i < n; ++i, printf("\n")) for (int j = 0; j < n; ++j) printf("%d ",a[i][j]); return 0; }

prosjecni.cpp: In function 'int main()':
prosjecni.cpp:12:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&n);
                 ^