Cod sursa(job #2948208)

Utilizator PsyDuck1914Feraru Rares-Serban PsyDuck1914 Data 27 noiembrie 2022 14:12:10
Problema Suma si numarul divizorilor Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.22 kb
#include <fstream>
#include <iostream>
#include <bitset>
#include <vector>

using namespace std;

ifstream f ("ssnd.in");
ofstream g ("ssnd.out");

const int NMAX = 1e6;
const int MOD = 9973;

bitset<1+NMAX> c;
vector<int> prime;

void precalcul(){
    for(int i=2; i*i<=NMAX; i++)
        if(!c[i])
            for(int j=i*i; j<=NMAX; j+=i)
                c[j] = 1;
    for(int i=2; i<=NMAX; i++)
        if(!c[i])
            prime.push_back(i);
}

void ssnd(long long n){
    int d = 0;
    long long sum = 1;
    int nrdiv = 1;
    while(d < prime.size() and prime[d] * prime[d] <= n){
        if(n % prime[d] == 0){
            int p = 0;
            long long pwr = prime[d];
            while(n % prime[d] == 0){
                p++;
                pwr *= prime[d];
                n /= prime[d];
            }
            nrdiv *= (p+1);
            sum  = sum*(pwr - 1)/(prime[d] - 1);
            sum %= MOD;
        }
        d++;
    }
    if( n > 1 ){
        nrdiv *= 2;
        sum = sum*(n*n-1)/(n-1);
        sum %= MOD;
    }
    g << nrdiv << ' ' << sum << "\n";
}

int main()
{
    precalcul();
    int t;
    f>>t;
    for(int i=1; i<=t; i++){
        long long n;
        f>>n;
        ssnd(n);
        
    }

    return 0;
}