WA on test 21:

#include <stdio.h>

double p,q,px,qx,temp;
int x;

void main(void)
{
  scanf("%lf %lf",&p,&q);
  x = 1;
  while(1)
  {
    px = p*x; qx = q*x;
    temp = (int)(qx/100)*100;
    if ((temp > px) && (temp < qx)) break;
    x++;
  }
  printf("%d\n",x);
}

Then I tried to introduce EPSILON, but the same WA on 21:

#include <stdio.h>
#define EPS 1e-15

double p,q,px,qx,temp;
int x;

void main(void)
{
  scanf("%lf %lf",&p,&q);
  x = 1;
  while(1)
  {
    px = p*x; qx = q*x;
    temp = (int)(qx/100+EPS)*100;
    if ((temp > px+EPS) && (temp < qx-EPS)) break;
    x++;
  }
  printf("%d\n",x);
}

P.S. Silly mistake - accepted.

Edited by author 06.03.2006 14:28

Edited by author 06.03.2006 14:29