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

using u32 = uint32_t;
using u64 = uint64_t;

u32 nextState(u32 x) {
    x ^= x << 13;
    x ^= x >> 17;
    x ^= x << 5;
    return x;
}

array<u32, 32> nextSymbolic(array<u32, 32> x) {
    array<u32, 32> y = x;
    for (int i = 13; i < 32; ++i) y[i] ^= x[i - 13];
    x = y;

    y = x;
    for (int i = 0; i + 17 < 32; ++i) y[i] ^= x[i + 17];
    x = y;

    y = x;
    for (int i = 5; i < 32; ++i) y[i] ^= x[i - 5];
    return y;
}

int handValue(char c) {
    if (c == 'R') return 0;
    if (c == 'S') return 1;
    if (c == 'P') return 2;
    return 3;  // X
}

u32 recoverInitialState(const string& t) {
    array<u32, 32> symbolic{};
    for (int bit = 0; bit < 32; ++bit) symbolic[bit] = u32(1) << bit;

    vector<u64> equations;
    equations.reserve(2 * t.size());

    for (char c : t) {
        symbolic = nextSymbolic(symbolic);
        const int value = handValue(c);
        equations.push_back(u64(symbolic[0]) | (u64(value & 1) << 32));
        equations.push_back(u64(symbolic[1]) | (u64((value >> 1) & 1) << 32));
    }

    array<int, 32> pivotRow;
    pivotRow.fill(-1);

    int row = 0;
    for (int col = 0; col < 32; ++col) {
        int selected = -1;
        for (int i = row; i < static_cast<int>(equations.size()); ++i) {
            if ((equations[i] >> col) & 1ULL) {
                selected = i;
                break;
            }
        }
        if (selected == -1) continue;

        swap(equations[row], equations[selected]);
        pivotRow[col] = row;

        for (int i = 0; i < static_cast<int>(equations.size()); ++i) {
            if (i != row && ((equations[i] >> col) & 1ULL)) {
                equations[i] ^= equations[row];
            }
        }
        ++row;
    }

    u32 initial = 0;
    for (int col = 0; col < 32; ++col) {
        if (pivotRow[col] != -1 && ((equations[pivotRow[col]] >> 32) & 1ULL)) {
            initial |= u32(1) << col;
        }
    }
    return initial;
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    string T;
    int N;
    cin >> T >> N;

    u32 state = recoverInitialState(T);

    for (int i = 0; i < 100; ++i) state = nextState(state);

    static constexpr char winningHand[4] = {'X', 'R', 'S', 'P'};
    string answer;
    answer.reserve(N);

    for (int i = 0; i < N; ++i) {
        state = nextState(state);
        answer.push_back(winningHand[state & 3U]);
    }

    cout << answer << '\n';
    return 0;
}