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Cod sursa(job #656831)
#include<fstream>
#include<iostream>
using namespace std;
int main()
{
int N,X,Y,i,s,a,contory,b;
ifstream f("sum.in");
ofstream g("sum.out");
f>>N;
for(i=1;i<=N;i++)
{
f>>X;
contory=0;
s=0;
b=X;
for(Y=2;Y<=b*2;Y++)
{a=Y;
while(X!=a)
{
if(X>a)
{
X=X-a;
}
else
{
a=a-X;
}
}
if(X==1)
{
s=s+Y;
contory++;
}
X=b;
if(contory==b)
{
Y=3*b;
}
}
g<<s<<endl;
}
f.close();
g.close();
return 0;
}