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

int main() {
    double a,b;
    cin >> a >> b;
    cout << b / 100 * a << endl;
}

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define for_(i, a, b) for(int i = (a);i < (b);++i)
#define ford_(i, a, b) for(int i = (b)-1;i >= (a);--i)
#define rep(i, n) for_(i, 0, n)
#define repd(i, n) rfor_(i, 0, n)


int main(){
  int a,b;

  cin >> a >> b;

  if(a == b) cout << a << endl;
  else cout << 3-(a + b) << endl;

  return 0;
}
