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Cod sursa(job #322687)
#include<fstream>
#define maxn 257
using namespace std;
ifstream f("lacate.in");
ofstream g("lacate.out");
int a[maxn][maxn],i,j,k,n,p;
int main()
{
f>>n;
if(n&1)
{
p=n*(n-1)/2;
for(i=1;i<=n/2;++i)
for(j=1;j<n;++j)
a[i][j]=++k;
for(i=1;i<=n/2;++i)
a[n/2+1][i]=++k;
k=0;
for(i=n/2+1;i<n;++i)
a[n/2+1][i]=++k;
for(j=1;j<n;++j)
for(i=n/2+2;i<=n;++i)
a[i][j]=++k;
}
else
{
p=n*(n-1)/2;
for(i=1;i<=n/2;++i)
for(j=1;j<n;++j)
a[i][j]=++k;
k=0;
for(j=1;j<n;++j)
for(i=n/2+1;i<=n;++i)
a[i][j]=++k;
}
g<<p<<" "<<n-1<<"\n";
for(i=1;i<=n;++i)
{
for(j=1;j<n;++j)
g<<a[i][j]<<" ";
g<<"\n";
}
f.close();
g.close();
return 0;
}