Cod sursa(job #741556)
Utilizator | Persa Paul RoPaul | Data | 26 aprilie 2012 14:34:07 |
---|---|---|---|
Problema | Numarare triunghiuri | Scor | 70 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.44 kb |
#include<fstream>
using namespace std;
int main()
{
int nrt=0,a[800],i,j,n,k;
ifstream f("nrtri.in");
ofstream g("nrtri.out");
f>>n;
for(i=1;i<=n;i++)
f>>a[i];
/*
for(i=1;i<n;i++)
for(j=i;j<=n;j++)
if(a[i]<a[j])
{
aux=a[i];
a[i]=a[j];
a[j]=aux;
}
*/
for(i=1;i<=n-2;i++)
for(j=i+1;j<n;j++)
for(k=j+1;k<=n;k++)
if(a[i]<=a[j]+a[k] && a[i]+a[k]>=a[j] && a[i]+a[j]>=a[k])
nrt++;
g<<nrt;
f.close();
g.close();
return 0;
}