Cod sursa(job #2432565)

Utilizator laurastanStan Laura laurastan Data 24 iunie 2019 12:59:42
Problema Ciurul lui Eratosthenes Scor 50
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.29 kb
Raporteaza aceasta sursa 
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("ciur.in");
ofstream g("ciur.out");
int n,i,j,x,v[2000010],c;
int main()
{f>>n;
for(i=3;i<=n;i++)
{if(v[i]==0 && i%2!=0)
for(j=2*i;j<=n;j=j+i)
{v[j]=1;}
if(v[i]==0 && i%2!=0) {c++;}

}
g<<c+1;

    return 0;
}