Cod sursa(job #1571693)

Utilizator cldmeClaudiu Ion cldme Data 18 ianuarie 2016 12:58:57
Problema Suma si numarul divizorilor Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 1.13 kb
#include <cstdio>
using namespace std;
int const M = 9973;
int m = 1000000;
long long sumDiv;
int p[2000001];
bool c[2000001];

void ciur()
{
    int i,j;
    for(i = 2; i*i <= m; i++)
        if(c[i] == false)
            for(j = i*i; j <= m; j += i)
                c[j] = true;
}

int numdiv(int x)
{
    int i,ndiv;
    long long divTotal = 1,pow;
    for(i = 1; p[i]*p[i] <= x; i++)
    {
        ndiv = 1;
        pow = p[i];
        while(x % p[i] == 0)
        {
            ndiv++;
            sumDiv += pow % M;
            pow *= p[i];
            x /= p[i];
        }
        divTotal *= ndiv;
    }
    if(x != 1)
    {
        divTotal *= 2;
        sumDiv *= ((x * x - 1) / (x - 1)) % M;
    }
    return divTotal;
}

int main()
{
    int i,t,x,nr=0;
    freopen("ssnd.in","r",stdin);
    freopen("ssnd.out","w",stdout);
    scanf("%d",&t);
    ciur();
    for(i = 2; i <= m; i++)
        if(c[i] == false) p[++nr] = i;
    for(i=1; i<=t; i++)
    {
        sumDiv = 1;
        scanf("%d",&x);
        printf("%d ",numdiv(x));
        printf("%d\n",sumDiv);
    }
    return 0;
}