n = int(input())
v = []
while n >= 720:
	v.append('C')
	n -= 720
while n >= 360:
	v.append('M')
	n -= 360
while n >= 180:
	v.append('S')
	n -= 180
while n >= 30:
	v.append('R')
	n -= 30
while n >= 6:
	v.append('o')
	n -= 6
while n >= 1:
	v.append('.')
	n -= 1

print(''.join(v))