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Cod sursa(job #597908)
#include <cstdio>
using namespace std;
const int N = 505;
int a[N][N], n;
int main() {
freopen("lacate.in", "r", stdin);
freopen("lacate.out", "w", stdout);
int i, j;
scanf("%d", &n);
printf("%d %d\n", (n * (n - 1) )/ 2, n - 1);
int k = 0;
for(i = 1; i <= n; ++i)
for(j = 1; j < n; ++j)
if(!a[i][j]) {
++k;
a[i][j] = k;
a[j + 1][i] = k;
}
for(i = 1; i <= n; ++i){
for(j = 1; j < n; ++j)
printf("%d ", a[i][j]);
printf("\n");
}
return 0;
}