Cod sursa(job #1860753)

Utilizator XIIICristian Boicu XIII Data 28 ianuarie 2017 12:52:05
Problema Ciurul lui Eratosthenes Scor 20
Compilator cpp Status done
Runda Arhiva educationala Marime 0.25 kb
Raporteaza aceasta sursa 
#include <bits/stdc++.h>
using namespace std;
long long i,j,n,k;
int main(){
	ifstream cin("ciur.in");
	ofstream cout("ciur.out");
	cin>>n;
	for (i=2;i<=n;i++)
		if (i%2==0 ||i%3==0 || i%7==0 || i%5==0) k++;
	cout<<n-1-k+4;	 
	
	return 0;
	
}