Cod sursa(job #1685111)

Utilizator xandruGuzun Alexandru xandru Data 11 aprilie 2016 15:14:21
Problema Sum Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.38 kb
#include <bits/stdc++.h>
 
using namespace std;
ifstream fin("sum.in");
ofstream fout("sum.out");

int gcd(int a, int b)
{
	if(!b) return a;
else	return gcd(b,a%b);
}
int s,t,n,i,o,x;

int main()
{
	fin>>t;
	for(o=1;o<=t;o++)
	{
		s=0;
	
    	fin>>x;
    	for(i=1;i<=2*x;i++)
   	 	{  
     			if(gcd(i,x)==1)
				s+=i;
	   }

    fout<<s;
 }
    return 0;
}