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Cod sursa(job #271615)
#include<stdio.h>
int a[270][270],n,nr,i,j,sol;
int main(){
FILE *f = fopen("lacate.in","r");
FILE *g = fopen("lacate.out","w");
fscanf(f,"%d",&n);
sol = n*(n-1)/2;
nr = 0;
for(i=1; i<n; i++)
for(j=i+1; j<=n; j++)
nr++,a[i][++a[0][i]] = nr, a[j][++a[0][j]] = nr;
fprintf(g,"%d %d\n",sol,n-1);
for(i=1; i<=n; i++){
for(j=1; j<n; j++)
fprintf(g,"%d ",a[i][j]);
fprintf(g,"\n");
}
fclose(f);
fclose(g);
return 0;
}