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Cod sursa(job #195691)
#include<stdio.h>
#include<vector>
using namespace std;
int main()
{
FILE * in=fopen("lacate.in","r");
FILE * out=fopen("lacate.out","w");
int n;
fscanf(in,"%d",&n);
int i,j;
fprintf(out,"%d %d\n",n*(n-1)/2,n-1);
int m=n*(n-1)/2;
vector<int> chei[256];
for( i=0;i<m;i++)
{
chei[i%n].push_back(i+1);
chei[(i+1)%n].push_back(i+1);
}
for(i=0;i<n;i++)
{
for( j =0;j<n-1;j++)fprintf(out,"%d ",chei[i][j]);
fprintf(out,"\n");
}
fclose(in);
fclose(out);
return 0;
}