#include<bits/stdc++.h>
using namespace std;
using Int = long long;

template<typename T1,typename T2> inline void chmin(T1 &a,T2 b){if(a>b) a=b;}
template<typename T1,typename T2> inline void chmax(T1 &a,T2 b){if(a<b) a=b;}

//INSERT ABOVE HERE
signed main(){
  Int A,B;
  cin>>A>>B;
  Int s=1e8;
  for(Int i=0;i<=5000;i++){
    for(Int j=0;j<=5000;j++){
      if(i+j==0) continue;
      Int x=round(100.0*i/(i+j));
      Int y=round(100.0*j/(i+j));
      if(A!=x||B!=y) continue;
      chmin(s,i+j);
    }
  }
  cout<<s<<endl;
  return 0;
}