N = int(input())
base = [1, 6, 30, 180, 360, 720]
exp = '.oRSMC'
res = [0] * 6
for i in range(5, -1, -1):
    res[i] = N // base[i]
    N = N % base[i]
ans = ''
for i in range(5, -1, -1):
    ans += exp[i] * res[i]
print(ans)