Cod sursa(job #6669)

Utilizator cibsibbibicu amicu cibsib Data 20 ianuarie 2007 15:13:26
Problema Numarare triunghiuri Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.32 kb
Raporteaza aceasta sursa 
#include<fstream.h>
int main()
   {ifstream f("nrtri.in");
   ofstream g("nrtri.out");
   int n,a[30000],i,j,k,nr=0;
   f>>n;
   for(i=1;i<=n;i++)
      f>>a[i];
   for(i=1;i<=n;i++)
      for(j=i;j<=n;j++)
	 for(k=j;k<=n;k++)
	    if(a[i]+a[j]>=a[k] && a[i]+a[k]>=a[j] && a[j]+a[k]>=a[i]) nr++;
   g<<nr;}