#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <climits>
#include <cfloat>
#include <map>
#include <utility>
#include <ctime>
#include <set>
#include <iostream>
#include <memory>
#include <string>
#include <cstring>
#include <vector>
#include <algorithm>
#include <functional>
#include <fstream>
#include <sstream>
#include <complex>
#include <stack>
#include <queue>
#include <cstring>
#include <numeric>
#include <cassert>
using namespace std;
static const double EPS = 1e-10;
typedef long long ll;
#define rep(i,n) for(int (i)=0;(i)<(n);(i)++)
#define rev(i,n) for(int i=(n)-1;(i)>=0;(i)--)
#define all(a) (a).begin(),(a).end()
#define pb(a) push_back(a)
#define bitcount(b) __builtin_popcount(b)
template<typename T, typename S> vector<T>& operator<<(vector<T>& a, S b) { a.push_back(b); return a; }
template<typename T> void operator>>(vector<T>& a, int b) {while(b--)if(!a.empty())a.pop_back();}
bool isprime(int n){ if(n<2)return false;  for(int i=2;i*i<=n;i++)if(n%i==0)return false;  return true;} 
ll b_pow(ll x,ll n){return n ? b_pow(x*x,n/2)*(n%2?x:1) : 1ll;}
string itos(int n){stringstream ss;ss << n;return ss.str();}

template<class T> ostream& operator<<(ostream& os, const pair<T,T>& p)
{
	os << "(" << p.first << "," << p.second << ")";
    return os;
}
template<class T> ostream& operator<<(ostream& os, const vector<T>& arr)
{
	os << "{";
	for(int i = 0 ; i < arr.size() ; i++) os << (i==0?"":",") << arr[i];
	os << "}";
    return os;
}


vector<int> a;

int main(){
	int A,B;
	cin >> A >> B;
	for(int i = 0 ; i <= 2000 ; i++){
		for(int j = 0 ; j <= i ; j++){
			int a = i - j;
			int b = j;
			int ra = 100. * a / (a+b) + 0.5 + 1e-9;
			int rb = 100. * b / (a+b) + 0.5 + 1e-9;
			if( ra == A && rb == B ){
				cout << i << endl;
				return 0;
			}
				
			
		}
	}
}