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

for a in xrange(-5000, 5000):
    for b in xrange(-5000+abs(a), 5000-abs(a)):
        c = a*x+b*y
        if z == c == 0 and 2*(abs(a)+abs(b))-1 <= 10000:
            print_ans(a, b, 1)
            exit()
        if c > 0 and z % c == 0:
            if a != 0 or b != 0:
                w = z/c
                if (a<=0 or b <=0):
                    length = (2*(abs(a)+abs(b))-1)*w+w-1
                else:
                    length = (2*abs(a)+abs(b)-2)+w+w-1
                if length <= 10000:
                    print_ans(a, b, z/c)
                    exit()
print 'mourennaihasimasenn'