Cod sursa(job #2123361)

Utilizator iuliiaiulia scarlat iuliia Data 6 februarie 2018 10:02:50
Problema Fractii Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.27 kb
Raporteaza aceasta sursa 
#include <fstream>

using namespace std;
ifstream fin("suma.in");
ofstream fout("suma.out");
int main()
{
    int n,p,s1,s2,i;
    fin>>n>>p;
    s1=(n%p)*(n+1)%p*((2*n+1)%p)/6;
    s2=n%p*((n+1)%p)/2;
    s1=s1%p;
    s2=s2%p;
    fout<<s1-s2;
    return 0;
}