Cod sursa(job #689115)
Utilizator | Birjovanu Georgiana gigiibirjo | Data | 24 februarie 2012 09:41:01 |
---|---|---|---|
Problema | Numarare triunghiuri | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.48 kb |
#include<fstream>
using namespace std;
int nr,n,v[8001];
int main ()
{
int i,d,j,aux;
ifstream fin("nrtri.in");
ofstream fout("nrtri.out");
fin>>n;
nr=0;
for(i=1; i<=n; i++)
fin>>v[i];
for(i=1; i<=n-1; i++)
for(j=i+1; j<=n; j++)
if(v[i]>v[j])
{
aux=v[i];
v[i]=v[j];
v[j]=aux;
}
for(i=1; i<=n; i++)
for(j=i+1; j<=n; j++)
for(d=j+1; d<=n; d++)
if(v[i]+v[j]>=v[d])
nr++;
fout<<nr;
fin.close();
fout.close();
return 0;
}