Cod sursa(job #2923745)

Utilizator daryufDaryuF daryuf Data 18 septembrie 2022 17:31:48
Problema Ciurul lui Eratosthenes Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.24 kb
Raporteaza aceasta sursa 
#include <iostream>

using namespace std;
int v[2000001];
int main()
{int n,k=0;
cin>>n;
for(int i=2;i<=n;i++)
if(v[i]==0)
    for(int j=2*i;j<=n;j+=i)
    v[j]=1;
for(int i=2;i<=n;i++)
    if(!v[i])k++;
cout<<k;

    return 0;
}