import collections,sys,math,functools,operator,itertools,bisect,heapq,decimal,string,time,random
#sys.setrecursionlimit(10**9)
#sys.set_int_max_str_digits(0)
#input = sys.stdin.readline
n = int(input())
a = list(map(int,input().split()))

ans = []
for i in range(2,n+1):
    while a[0] != i:
        ans.append('R')
        a.append(a.pop(0))
    ans.append('S')
    a[0],a[1] = a[1],a[0]
    while a[0] != i-1:
        ans.append('R')
        a.append(a.pop(0))
        ans.append('S')
        a[0],a[1] = a[1],a[0]
        

while a != list(range(1,n+1)):
    ans.append('R')
    a.append(a.pop(0))

print(''.join(ans))