#include <iostream>
#include <iomanip>

using namespace std;

int main() {
    int parent1[2], parent2[2], offspring[2];

    // Input sifat dari kedua orang tua dan keturunan
    for (int i = 0; i < 2; i++) {
        cin >> parent1[i];
    }
    for (int i = 0; i < 2; i++) {
        cin >> parent2[i];
    }
    for (int i = 0; i < 2; i++) {
        cin >> offspring[i];
    }

    // Hitung kemungkinan fenotipe untuk tinggi dan jumlah anakan
    int tall_count = 0; // Tinggi
    int many_count = 0; // Jumlah anakan

    // Menghitung rasio F1 untuk tinggi tanaman
    if (parent1[0] == 2 && parent2[0] == 2) tall_count = 4; // TT x TT
    else if (parent1[0] == 2 && parent2[0] == 1) tall_count = 3; // TT x Tt
    else if (parent1[0] == 2 && parent2[0] == 0) tall_count = 2; // TT x tt
    else if (parent1[0] == 1 && parent2[0] == 1) tall_count = 2; // Tt x Tt
    else if (parent1[0] == 1 && parent2[0] == 0) tall_count = 1; // Tt x tt
    else if (parent1[0] == 0 && parent2[0] == 0) tall_count = 0; // tt x tt
    else if (parent1[0] == 0 && parent2[0] == 1) tall_count = 1; // tt x Tt
    else if (parent1[0] == 0 && parent2[0] == 2) tall_count = 2; // tt x TT

    // Menghitung rasio F1 untuk jumlah anakan
    if (parent1[1] == 2 && parent2[1] == 2) many_count = 4; // BB x BB
    else if (parent1[1] == 2 && parent2[1] == 1) many_count = 3; // BB x Bb
    else if (parent1[1] == 2 && parent2[1] == 0) many_count = 2; // BB x bb
    else if (parent1[1] == 1 && parent2[1] == 1) many_count = 2; // Bb x Bb
    else if (parent1[1] == 1 && parent2[1] == 0) many_count = 1; // Bb x bb
    else if (parent1[1] == 0 && parent2[1] == 0) many_count = 0; // bb x bb
    else if (parent1[1] == 0 && parent2[1] == 1) many_count = 1; // bb x Bb
    else if (parent1[1] == 0 && parent2[1] == 2) many_count = 2; // bb x BB

    // Total kemungkinan genotipe
    int total_combinations = 16; // 4 (tinggi) * 4 (anakan)

    // Menghitung kombinasi yang diinginkan
    int successful_combinations = 0;
    if ((offspring[0] == 0 && tall_count == 0) || (offspring[0] == 1 && tall_count > 0) || (offspring[0] == 2 && tall_count > 0)) {
        successful_combinations += tall_count;
    }
    if ((offspring[1] == 0 && many_count == 0) || (offspring[1] == 1 && many_count > 0) || (offspring[1] == 2 && many_count > 0)) {
        successful_combinations += many_count;
    }

    // Hitung persentase
    double percentage = (double)successful_combinations / total_combinations * 100;

    // Output persentase
    cout << fixed << setprecision(2) << percentage << "%" << endl;

    return 0;
}