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Cod sursa(job #26709)
#include<stdio.h>
int n,x,i,j,s;
/*int cmmdc(int a, int b)
{ int aux;
while(a!=b){ if(a>b){aux=a; a=b; b=aux;}
a-=b;
}
return a;
}*/
int main()
{ FILE *f=fopen("sum.in","r");
FILE *g=fopen("sum.out","w");
fscanf(f,"%d",&n);
for(i=1;i<=n;i++)
{ fscanf(f,"%d",&x);
s=0;
if(x%2==0)
for(j=1;j<2*x;j+=2)
{ a=x;
while(a){aux=a a=j%a j=aux}
if(a==1) s+=j;
}
else for(j=1;j<=2*x;j++)
{ a=x;
while(a){aux=a a=j%a j=aux}
if(a==1) s+=j;
}
fprintf(g,"%d\n",s);
}
fcloseall();
return 0;
}