第一题

a=0  
b=0  
c=0  
s=0  
for i in range (1,5):
    a=i*100
    for m  in range (1,5):
        if i==m:
            continue
        else:
            b=m*10
            for n in  range (1,5):
                if i==n or m==n:
                    continue
                else:
                    c=n
                    s=a+b+c
                    print(s)