I wrote the solution in C++ and in PASCAL. WA both of the
time. See in C :

#include <stdio.h>
#include <math.h>
float a,b;
long int c;
short int found;
int main () {
scanf("%f %f",&a,&b);
c=0;
found=0;
while (found!=1)
{
 if (floor(a*c/100)!=floor(b*c/100)) found=1; else c++;
}
printf("%d\n",c);
return 0;
}

I've used PASCAL as well. Where do I make a mistake?