Cod sursa(job #1958550)

Utilizator CristeaCristianCristea Cristian CristeaCristian Data 8 aprilie 2017 14:47:35
Problema Ciurul lui Eratosthenes Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.26 kb
Raporteaza aceasta sursa 
#include <fstream>

using namespace std;
int v[10000];
ifstream in("kdiv.in");
ofstream out("kdiv.out");

int main()
{int n,i,j,cnt=0;
in>>n;
for(i=2;i<=n;i++)
{if(v[i]==0)
{cnt++;

for(j=i*2;j<=n;j+=i)
v[j]=1;


}
}
out<<cnt;

    return 0;
}