#include <bits/stdc++.h>
#define FOR(i,a,b) for(int i = (a); i < (b); ++i)
#define REP(i,n) FOR(i,0,n)
#define RREP(i,n) for(int i = (n) - 1; (i) >= 0; --i)
#define SZ(n) (int)(n).size()
#define ALL(n) (n).begin(), (n).end()
#define MOD LL(1e9 + 7)
#define INF 1000000
using namespace std;
typedef long long LL;
typedef vector<int> VI;
typedef pair<int, int> PI;

int pn[6] = {2, 3, 5, 7, 11, 13};
int cn[6] = {4, 6, 8, 9, 10, 12};

int main() {
    int p, c;
    cin >> p >> c;
    double ep = 0;
    REP(i, 6){
        ep += pn[i];
    }
    ep /= 6;
    double ec = 0;
    REP(i, 6) {
        ec += cn[i];
    }
    ec /= 6;
    double ans = 1;
    REP(i, p) {
        ans *= ep;
    }
    REP(i, c) {
        ans *= ec;
    }
    cout << setprecision(12) << fixed << ans << endl;
    return 0;
}