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Cod sursa(job #110806)
#include <fstream.h>
#define max 256
#define comb max*(max+1)/2
int a[comb][max],viz[comb];
int main()
{ int n,i,j,k,c,x;
ifstream f("lacate.in");
ofstream g("lacate.out");
f>>n;
f.close();
c=n*(n-1)/2;
g<<c<<' '<<n-1<<'\n';
for (i=1;i<n;i++)
a[1][i]=i;
x=n;
for (k=2;k<=n;k++)
{ for (i=1;i<k;i++)
for (j=1;j<n;j++)
if (viz[a[i][j]]==0)
{ viz[a[i][j]]=1;
a[k][i]=a[i][j];
break;
}
for (j=k;j<n;j++)
{ a[k][j]=x;
x++;
}
}
for (i=1;i<=n;i++)
{ for (j=1;j<=n-1;j++)
g<<a[i][j]<<' ';
g<<'\n';
}
g.close();
return 0;
}