import sys
readline=sys.stdin.readline

X,Y,Z=map(int,readline().split())
if Z:
    ans="NO"
    for x in range(-4999,5000):
        if Y and (Z-x*X)%Y or Y==0 and Z-x*X:
            continue
        if Y:
            y=(Z-x*X)//Y
        else:
            y=0
        if abs(x)+abs(y)<=4999:
            if x>0:
                ans="w"*abs(y)+"c"+"cC"*(x-1)+("C"*y if y>=0 else "W"*(-y))
            else:
                ans="c"*abs(x)+"w"+"wC"*(y-1)+("C"*x if x>=0 else "W"*(-x))
            break
else:
    ans="ccW"
print(ans)