Cod sursa(job #1331316)

Utilizator ElleMenTalLCristian Maranca ElleMenTalL Data 31 ianuarie 2015 15:15:38
Problema Ciurul lui Eratosthenes Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.31 kb
Raporteaza aceasta sursa 
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("ciur.in");
ofstream g("ciur.out");
char v[1000001];
int main()
{
 int i,j,n,cnt=0;
 f>>n;
 for(i=2;i<n;++i) v[i]=1;
 for(int i=2;i<n;++i)
    if(v[i]==1)
        for(j=i*i;j<n;j=j+i)
        {v[j]=0;cnt++;}
g<<cnt;
return 0;
}