Cod sursa(job #57794)
Utilizator | Robert Sandu Mirage | Data | 2 mai 2007 23:56:40 |
---|---|---|---|
Problema | Numarare triunghiuri | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.38 kb |
#include<stdio.h>
#include<algorithm>
using namespace std;
int main () {
int n,v[800],i,nr=0,j;
FILE *in=fopen("nrtri.in","r"), *out=fopen("nrtri.out","w");
fscanf(in,"%d",&n);
for(i=0;i<n;i++)
fscanf(in,"%d",&v[i]);
sort(v,v+n);
for(i=1;i<n;i++)
for(j=i+1;(v[i-1]+v[i])>=v[j]&&j<n;j++)
nr++;
fprintf(out,"%d\n",nr);
fclose(in);
fclose(out);
return 0;
}