n = int(input())
assert 2 <= n <= 100
p = list(map(int, input().split()))
assert len(p) == n
assert set(p) == set(range(n))

not_yet = True
ans = []
while not_yet:
    not_yet = False
    for i in range(n - 1):
        if p[i] > p[i + 1]:
            not_yet = True
            p[i], p[i + 1] = p[i + 1], p[i]
            ans.append('S')
        ans.append('R')
    ans.append('S')

print(''.join(ans))