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Cod sursa(job #134202)
#include<fstream.h>
ifstream fin("sum.in");
ofstream fout("sum.out");
long x,N,i,j;
long long s;
int cmmdc(long a, long b)
{
while(a!=b) { if(a>b) a-=b; else b-=a; }
return b;
}
int main()
{
fin>>N;
for(i=1; i<=N; i++)
{ fin>>x;
s=0;
for(j=1; j<=2*x; j++)
if( !( ( x%2==0 && j%2==0 )||( x%10==5 && j%10==5)|| ( x%j==0&&j!=1 )||( j%x==0&&j!=1 ) ) ) if(cmmdc(j,x)==1) s+=j;
fout<<s<<"\n";
}
return 0;
}