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Cod sursa(job #763709)
#include<fstream>
using namespace std;
int a[259][259];
int main(void)
{
ifstream fin("lacate.in");
ofstream fout("lacate.out");
int n,k=0,c,i,j,col;
fin>>n;
c=((n-1)*n)/2;
col=(c*2)/n;
for(i=1;i<=n;++i)
for(j=i;j<=col;++j)
a[i][j]=a[j+1][i]=(++k);
fout<<c<<' '<<col<<'\n';
for(i=1;i<=n;++i){
for(j=1;j<=col;++j)
fout<<a[i][j]<<' ';
fout<<'\n';
}
return 0;
}