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Cod sursa(job #343817)
#include<cstdio>
#define N 257
int num,a[N][N-1];
short int n;
void citire()
{
freopen("lacate.in","r",stdin);
freopen("lacate.out","w",stdout);
scanf("%hd",&n);
printf("%d %hd\n",n*(n-1)/2,n-1);
for (int i=1; i<=n; ++i)
for (int j=1; j<n; ++j)
if (!a[i][j])
{
++num;
a[i][j]=a[j+1][i]=num;
}
for (int i=1; i<=n; ++i)
{
for (int j=1; j<n; ++j)
printf("%d ",a[i][j]);
printf("\n");
}
}
int main()
{
citire();
return 0;
}