a = input().split()
for i in range(len(a) - 1, -1,-1):
    if "A" < a[i][0] < "Z":
        print(a[i].lower(),end = " ")
    elif "a" < a[i][0] < "z":
        print(a[i].upper(),end = " ")
    else:
        print(a[i][::-1],end = " ")