Cod sursa(job #1757439)

Utilizator Rocamadour1497Alexandru Martiniuc Rocamadour1497 Data 15 septembrie 2016 01:31:33
Problema Sum Scor 40
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.42 kb
#include <fstream>
using namespace std;
ifstream f("sum.in");
ofstream g("sum.out");
int n,v[200002],i,j;
void sum(int x)
{
    for(i=1;i<=2*x;i++) v[i]=i;
    for(i=2;i<=2*x;i++)
    {
        if(v[i])
        if(x%i==0)
        for(j=i;j<=2*x;j+=i) v[j]=0;

    }
}
int main()
{
    f>>n;
    int x;
    while(n--)
    {f>>x;
    sum(x);
    int s=0;
    for(i=1;i<2*x;i++) s+=v[i];
    g<<s<<endl;
}
}