#include <bits/stdc++.h>

using namespace std;
float p,q,t1,t2,t3,l1,l2;
int main()
{
    cin>>p>>q;
    for(int i=1; i<=1000000; i++){
        t1=(p*(float)i)/(float)100;
        t2=(q*(float)i)/(float)100;
        l1=(int)t1;
        l2=(int)t2;
        if(l1==t1||l2==t2||l1!=l2){
            if(l1!=t1) l1=l1+1;
            for(int j=l1; j<=l2; j++){
                t3=((float)j/(float)i)*(float)100;
                if(p-0.000001<t3&&t3<q+0.000001){
                    cout<<i;
                    return 0;
                }
            }
        }
    }
}