Cod sursa(job #1608330)

Utilizator AeroHHorea Stefan AeroH Data 21 februarie 2016 23:45:04
Problema Suma si numarul divizorilor Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 1.11 kb
#include <bits/stdc++.h>
#define N 100
#define mod 9973
using namespace std;
string s = "ssnd.";
ifstream f(s+"in");
ofstream g(s+"out");


char ch[N+1];
vector<int> pr;

long long int logexp(int a,int p)
{
    int r=1,i;
    for (i=1;i<=p;i<<=1)
    {
        if (p&i)
            r=1ll*r*a;
        a=a*a;
    }
    return r;

}

int main()
{
    int t,ct,x,nrd,sumd,i,j;
    for(i=2;i<=N;++i)
        if (ch[i]==0)
            {
                for (j=i<<1;j<=N;j+=i)
                    ch[j]=1;
                pr.push_back(i);
            }

    f>>t;
    while(t--)
    {
        f>>x;
        nrd=sumd=1;
        for (i=0;1ll*pr[i]<=x && i<pr.size();++i)
        if(x%pr[i]==0)
        {
            ct=0;
            while(x%pr[i]==0)
            {
                ++ct;
                x/=pr[i];
            }
            nrd=nrd*(ct+1);
            sumd=sumd*(1ll*(logexp(pr[i],ct+1)-1)/(pr[i]-1))%mod;
        }
        if (x!=1)
        {
            nrd=nrd*2;
            sumd=sumd*(i+1)%mod;
        }
        g<<nrd<<" "<<sumd<<'\n';
    }

    return 0;
}