from itertools import *
count = 0
A = []
for elem in product("ПРОСТО", repeat = 6):
    if elem.count("П") == 1 and elem.count("Р") == 1 and elem.count("О") == 2 and elem.count("С") == 1 and elem.count("Т") == 1:
        for i in range(len(elem)):
            s =''
            s += elem[i]
            A.append(s)
for i in range(len(A)):
    if 'ОО' not in A[i]:
        count += 1
print(count)