#include <stdio.h>
int multiples(void);

int main(void)
{
int mults = 0;	
mults = multiples();
printf("%d", mults);
return 0;
}

int multiples(void)
{
int cnt, mult = 0, answer = 0;
   for(cnt=0;cnt<1000;cnt++)
   {
      if( cnt%3 == 0 || cnt%5 == 0)
      {
      mult += cnt;
      }
      else if( cnt % 3 == 0 && cnt % 5 == 0)
      {
      mult += cnt;
      }
 }
answer = mult;
return answer;
}