n=int(input())
a=list(map(int,input().split()))
op=""
i=a.index(n-1)
for p in reversed(range(n)):
  i=a.index(p)
  if i==p:
    continue
  for _ in range(p):
    if a[0]==p:
      op+="S"
      a[0],a[1]=a[1],a[0]
    op+="R"
    a=a[1:]+a[:1]
  while a[-1]!=n-1:
    op+="R"
    a=a[1:]+a[:1]
print(op)