1132.c

#include <stdio.h>

int main () {

  int x, y, soma = 0, i, aux = 0;

  scanf("%d %d", &x, &y);

  if (y < x)
  {

    aux = x;
    x = y;
    y = aux;


  }

  for (i = x; i <= y; i++)
  {

    if (i % 13 != 0)
    {

      soma += i;

    }
  }
  printf("%d\n", soma);
}