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Cod sursa(job #177141)
#include <stdio.h>
int mat[300][300];
int main()
{
int n;
freopen("lacate.in", "r",stdin);
freopen("lacate.out", "w",stdout);
scanf("%d", &n);
printf("%d %d\n",n*(n-1)/2,n-1);
int nr=0;
for(int i=1;i<=n-1;++i)
for(int j=i+1;j<=n;++j)
{
++nr;
mat[i][ ++mat[i][0] ]=nr;
mat[j][ ++mat[j][0] ]=nr;
}
for(int i=1;i<=n;++i)
{
for(int j=1;j<=mat[i][0];++j)
printf("%d ",mat[i][j]);
printf("\n");
}
return 0;
}