from collections import deque
N = int(input())
P = deque(list(map(int,input().split())))
ans = []
for i in range(N-2,0,-1):
    ind = P.index(i)
    if P[(ind+1)%N]==i+1:continue
    while True:
        while P[0]!=i:
            a = P.popleft()
            P.append(a)
            ans.append("R")
        P[0],P[1] = P[1],P[0]
        ans.append("S")
        if P[2]==i+1:break
if P!=list(range(N)):
    while P[0]!=0:
        a = P.popleft()
        P.append(a)
        ans.append("R")
print("".join(ans))