#include<bits/stdc++.h> using namespace std; //#define int long long typedef pair<int,int>pint; typedef vector<int>vint; typedef vector<pint>vpint; #define pb push_back #define mp make_pair #define fi first #define se second #define all(v) (v).begin(),(v).end() #define rep(i,n) for(int i=0;i<(n);i++) #define reps(i,f,n) for(int i=(f);i<(n);i++) #define each(it,v) for(__typeof((v).begin()) it=(v).begin();it!=(v).end();it++) template<class T,class U>void chmin(T &t,U f){if(t>f)t=f;} template<class T,class U>void chmax(T &t,U f){if(t<f)t=f;} int A,B; signed main(){ cin>>A>>B; int ans=1145141919; rep(a,1000)rep(b,1000)if(a||b){ int x=100.0*a/(a+b)+0.5; int y=100.0*b/(a+b)+0.5; if(A==x&&B==y)chmin(ans,a+b); } cout<<ans<<endl; return 0; }