Cod sursa(job #1481779)
Utilizator | Moise Andrei Moise_Andrei | Data | 5 septembrie 2015 11:35:05 |
---|---|---|---|
Problema | Numarare triunghiuri | Scor | 85 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.78 kb |
#include <iostream>
#include <fstream>
using namespace std;
ifstream in("nrtri.in");
ofstream out("nrtri.out");
int main()
{
int n,nr=0;
in>>n;
int v[n];
for(int i=0;i<n;i++)
in>>v[i];
for (int i = 0; i < n; ++i){
for (int j = i+1; j < n; ++j) {
if (v[i] > v[j]) {
int aux = v[i];
v[i] = v[j];
v[j] = aux;
}
}
}
for(int i=0;i<n;i++)
{
for(int j=i+1;j<n;j++)
{
///inlocuieste cu cautarea binara
for(int k=j+1;k<n;k++)
{
if(v[i]+v[j]>=v[k] && v[j]<=v[i] + v[k]){
nr++;
}
}
}
}
out<<nr;
return 0;
}