#include <algorithm>
#include <cstdio>
#include <iostream>
#include <map>
#include <cmath>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <vector>
#include <stdlib.h>
#include <stdio.h>
#include <bitset>
using namespace std;
#define FOR(I,A,B) for(int I = (A); I < (B); ++I)
typedef long long ll;

int main(){
  int A, B;
  cin >> A >> B;
  if (A == 0 || B == 0) {
    cout << 1 << endl;
    return 0;
  }
  int ans = 999;
  for(double a = 0.0; a <= 100.0; a+=1.0) {
    for(double b = 0.0; b <= 100.0; b+=1.0) {
      if(a == 0 && b == 0) continue;
      if (A == int((100.0 * a) / (a + b) + 0.5) && B == int((100.0 * b) / (a + b) + 0.5)) {
        ans = min(ans, int(a + b));
      }
    }
  }
  cout << ans << endl;
  return 0;
}