N = int(input())
P = list(map(int,input().split()))
fi = 0
ans = ""
for i in range(N):
  if P[fi] != i :
    while P[fi] != i:
      ans += "R"
      fi += 1
      fi %= N
  if P[fi] == i:
	  if(fi == i):
		  continue
	  else:
		  while fi != i:
			  ans += "S"
			  ans += "R"
			  P[fi],P[(fi+1)%N] = P[(fi+1)%N],P[fi]
			  fi += 1
			  fi %= N
while fi != 0:
  ans += "R"
  fi += 1
  fi %= N
print(ans)