Cod sursa(job #2426553)

Utilizator AndreiStrAndrei Stroici AndreiStr Data 28 mai 2019 17:48:19
Problema Suma divizorilor Scor 20
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.32 kb
Raporteaza aceasta sursa 
#include <bits/stdc++.h>

using namespace std;
ifstream f("sumdiv.in");
ofstream g("sumdiv.out");
int a,b;
long long s,p=1;

int main()
{
    f>>a>>b;
    if(a==1)
    {
        g<<1;
        return 0;
    }
    for(int i=0;i<+b;i++)
    {
        s+=p;
        p*=a;
    }
    g<<s+p%9901;
    return 0;
}