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


b=1<<60
for a in range(-5000,5001):
    # ax+by=z

    if (z-a*x)%y==0:
        b=(z-a*x)//y

        if abs(a)+abs(b)<=5000:
            break

if b==1<<60:
    print("NO")
    exit()

if a>=0 and b>=0:
    ANS=["c"]*a+["w"]*b+["C"]*(a+b-1)
elif a<0 and b>=0:
    ANS=["c"]*abs(a)+["w"]*b+["C"]*(b-1)+["W"]*abs(a)
else:
    ANS=["w"]*abs(b)+["c"]*a+["C"]*(a-1)+["W"]*abs(b)