N = int(input())

cd = (
    ('C', 720),
    ('M', 360),
    ('S', 180),
    ('R', 30),
    ('o', 6),
    ('.', 1),
)

for i in range(len(cd)):
    if N // cd[i][1]:
        print(cd[i][0] * (N // cd[i][1]), end='')
        N %= cd[i][1]

print()