Cod sursa(job #28852)

Utilizator anna_bozianuBozianu Ana anna_bozianu Data 8 martie 2007 13:19:58
Problema Sum Scor 50
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.63 kb
#include<stdio.h>
long long int n,x,i,j,s,b,a,aux;
int main()
{   FILE *f=fopen("sum.in","r");
    FILE *g=fopen("sum.out","w");
    fscanf(f,"%lld",&n);
    for(i=1;i<=n;i++)
       {  fscanf(f,"%lld",&x);
          s=0;
          if(x%2==0)
             for(j=1;j<x;j+=2)
                { a=x;b=j;
		  while(a){aux=a;a=b%a;b=aux;}
                  if(b==1) s+=x+2*j;
                  }
           else for(j=1;j<=x;j++)
		    { a=x;b=j;
		      while(a){aux=a;a=b%a;b=aux;}
                      if(b==1) s+=x+2*j;
                    }
          fprintf(g,"%lld\n",s);
         }
    fcloseall();
    return 0;
 }