x, y, z = map(int, raw_input().split())

def print_ans(a, b, w):
    if a >= 0 and b <= 0:
        print ('w'*abs(b) + 'c'*abs(a) + 'C'*(abs(a)-1) + 'W'*abs(b))*w
    elif a <= 0 and b >= 0:
        print ('c'*abs(a) + 'w'*abs(b) + 'C'*(abs(b)-1) + 'W'*abs(a))*w
    else:
        print ('c'*(abs(a)-1) + 'w'*abs(b) + 'C'*(abs(a)+abs(b)-1))*w

for a in xrange(-5000, 5000):
    for b in xrange(-5000+abs(a), 5000-abs(a)):
        c = a*x+b*y
        if c > 0 and z % c == 0:
            if a != 0 or b != 0:
                if 2*(abs(a)+abs(b))*(z/c)-1 <= 9999:
                    print_ans(a, b, z/c)
                    exit()
print 'mourennaihasimasenn'