Cod sursa(job #580691)

Utilizator informatician29kill03 informatician29 Data 13 aprilie 2011 13:21:52
Problema Ciurul lui Eratosthenes Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.27 kb
Raporteaza aceasta sursa 
#include<fstream> 
#include<cmath>
using namespace std; 
ifstream f("ciur.in");
ofstream g("ciur.out");
int main()
{long long i,nr,suma,d,ok;
f>>nr;
suma=0;
for(i=1;i<=nr;i++)
	{ok=1;
for(d=2;d<=sqrt(i);d++)
		if(i%d==0) ok=0;
if(ok==1) suma++;}
g<<suma;
}