Cod sursa(job #3362019)

Utilizator killah_queenTrifa Razvan killah_queen Data 31 iulie 2026 19:22:51
Problema Sum Scor 70
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.03 kb
#include <fstream>
#include <iostream>
using namespace std;
ifstream fin("sum.in");
ofstream fout("sum.out");
bool v[100005];
int fr[200005];
int main()
{
    int n,x;
    fin>>n;
    v[0]=1;
    v[1]=1;
    for(int j=2; j*j<=100000; j++)
    {
        if(v[j]==0)
            for(int k=2; k<=100000/j; k++)
                v[j*k]=true;
    }
    for(int i=0; i<n; i++)
    {
        long long s=0;
        fin>>x;
        for(int j = 0; j <= 2 * x; j++)
            fr[j] = 0;
        int xt=x,p=2;
        while(xt>1)
        {
            if(v[p]==false&&xt%p==0)
            {
                while(!(xt%p))
                    xt/=p;
                for(int j=p; j<=2*x; j+=p)
                {
                    fr[j]=1;
                }
            }
            p++;
            while(v[p])
                p++;
        }
        for(int j=2*x-1; j>=2; j--)
            if(fr[j]==0)
            {
                s+=j;
            }
        s++;
        fout<<s<<'\n';
    }
    return 0;
}