Cod sursa(job #249442)
Utilizator | Data | 28 ianuarie 2009 14:40:12 | |
---|---|---|---|
Problema | Numarare triunghiuri | Scor | 70 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.33 kb |
#include<fstream>
using namespace std;
ifstream f("nrtri.in");
ofstream g("nrtri.out");
int main(){
int i,a[801],n,m=0,j,k;
f>>n;
for (i=1;i<=n;i++) f>>a[i];
for (i=1;i<=n-2;i++)
for(j=i+1;j<=n-1;j++)
for(k=j+1;k<=n;k++) if(a[i]+a[j]>=a[k]&&a[j]+a[k]>=a[i]&&a[i]+a[k]>=a[j]) m+=1;
g<<m;
f.close();
g.close();
return 0;}