def ans(A,B):
    if abs(A)+abs(B) > 5000: return
    cA,wB = "c"*abs(A),"w"*abs(B)
    if A >= 0 and B >= 0:
        return cA+wB+"C"*(A+B-1)
    if A >= 0:
        return wB+cA+"C"*(A-1)+"W"*(-B)
    if B >= 0:
        return cA+wB+"C"*(B-1)+"W"*(-A)

x,y,z = map(int,input().split())
if z==0:
    print("ccW")
    exit()

for A in range(-5000,5001):
    v = z-A*x
    if y and v%y: continue
    if y==0 and v: continue
    if y: B = v//y
    else: B = 0
    s = ans(A,B)
    if s:
        print(s)
        exit()
print("NO")