#include<iostream>
using namespace std;
int main()
{
    double a,b,temp,temp2;
    int i;
    while(scanf("%lf%lf",&a,&b)!=EOF)
    {
      for( i=1;;i++)
      {
         if((int)(i*a/100)<(int)(i*b/100))
         {
             temp=i*b/100,temp2=(int)(i*a/100)+1;
             if( temp==temp2)
                cout<<i+1<<endl;
             else
               cout<<i<<endl;
             break;
         }
      }
    }
    return 0;
}