N = int(input())
P = list(map(int, input().split()))

ans = []
for i in reversed(range(N)):
    for j in range(N-1):
        if P[j] == i and j < i:
            P[j], P[j+1] = P[j+1], P[j]
            ans.append("S")
        ans.append("R")
    ans.append("R")

print("".join(ans))