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Cod sursa(job #560542)
#include <cstdio>
#include <iostream>
using namespace std;
int cmmdc(unsigned short a,unsigned short b)
{
unsigned short c;
while(b)
{
c=a%b;
a=b;
b=c;
}
return a;
}
int main()
{
unsigned int N,x,i,j,S;
FILE *intrare,*iesire;
intrare=fopen("sum.in","r");
fscanf(intrare,"%d",&N);
iesire=fopen("sum.out","w");
for(i=1;i<=N;i++)
{
S=0;
fscanf(intrare,"%d",&x);
for(j=1;j<=2*x;j++)
{
if(cmmdc(x,j)==1) S=S+j;
}
fprintf(iesire,"%d\n",S);
}
fclose(intrare);
fclose(iesire);
return 0;
}