Cod sursa(job #642391)
Utilizator | Data | 1 decembrie 2011 11:17:42 | |
---|---|---|---|
Problema | Numarare triunghiuri | Scor | 70 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.56 kb |
# include <cstdio>
using namespace std;
int i, j, k, n, ct, a[805];
int main()
{
freopen("nrtri.in","r",stdin);
freopen("nrtri.out","w",stdout);
scanf("%d",&n);
for (i = 1; i <= n; i++)
scanf("%d",&a[i]);
for (i = 1; i <= n; i++)
for (j = i + 1; j <= n; j++)
for (k = j + 1; k <= n; k++)
if ((a[i] > 0 && a[j] > 0 && a[k] > 0) &&
(a[i] + a[j] >= a[k]) && (a[i] + a[k] >= a[j]) &&
(a[j] + a[k] >= a[i])) ct++;
printf("%d",ct);
return 0;
}