Cod sursa(job #1685111)
| Utilizator | 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;
}
