Cod sursa(job #837687)
Utilizator | Data | 18 decembrie 2012 14:42:48 | |
---|---|---|---|
Problema | Ciurul lui Eratosthenes | Scor | 20 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.28 kb |
#include<iostream>
#include<fstream>
using namespace std;
main(){
ifstream f1("ciur.in");
ofstream f2("ciur.out");
int n,i,m,d,s=0,nr=0;
f1>>n;
for(i=2;i<=n;i++){
for(m=1;m<=i;m++){
d=i%m;
if(d==0)
s++;
}
if(s==2)
nr++;
s=0;
}
f2<<nr;
}