Cod sursa(job #2757749)

Utilizator Mihai_AritonMihai Ariton Mihai_Ariton Data 6 iunie 2021 12:37:57
Problema Numarare triunghiuri Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.99 kb
#include <iostream>
#include <algorithm>
#include <fstream>
using namespace std;

int v[1000];
int main()
{
    ifstream cin ("nrtri.in");
    ofstream cout("nrtri.out");
    
    int n, cnt=0, st, dr, ok=0, s=0;
    cin>>n;
    for(int i=1; i<=n; i++)
    {
        cin>>v[i];
    }
    sort(v+1, v+n+1);
    /*for(int i=1; i<=n; i++)
    {
        cout<<v[i]<<" ";
    }*/
    for(int i=1; i<n; i++)
    {
        for(int j=i+1; j<n; j++)
        {
           s=v[i]+v[j];
           /*while(dr-st>=1)
            {
                k=(dr+st)/2;
                if(s>=v[k])
                {
                    cnt++;
                    st=k;
                }
                else
                {
                    dr=k;
                }
            }*/
           for(int k=j+1; k<=n; k++)
           {
               if(s>=v[k])
               cnt++;
               else
               break;
           }
        }
    }
    cout<<cnt;

    return 0;
}