import sys
input = sys.stdin.readline

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

ANS=[]

for i in range(1,N):
    x=P.index(i)
    y=P.index(i-1)

    if x==(y+1)%N:
        continue

    while True:
        x=P.index(i)
        y=P.index(i-1)

        if x==(y+1)%N:
            break

        if P[0]==i:
            ANS.append("S")
            P[0],P[1]=P[1],P[0]
            continue
        else:
            ANS.append("R")
            P=P[1:]+[P[0]]

#print(P)
        
x=P.index(0)
ANS+="R"*x

print("".join(ANS))