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Cod sursa(job #717543)
#include<fstream>
#include<algorithm>
using namespace std;
ofstream out("sum.out");
int n;
int cmmdc(int a,int b);
int main()
{
ifstream in("sum.in");
int x,s;
in>>n;
for(int i=1;i<=n;i++)
{
s=0;
in>>x;
for(int j=1;j<=2*x;j++)
if(x<j)
{
if(cmmdc(j,x)==1)
s+=j;
}
else
{
if(cmmdc(x,j)==1)
s+=j;
}
out<<s<<"\n";
}
return 0;
}
int cmmdc(int a,int b)
{
int r;
while(a%b)
{
r=a%b;
a=b;
b=r;
}
return b;
}