1.1006 换个格式输出整数 (15分)
 
str=int(input())
def func(str):
    n_1
=str//100
    n_2
=(str-100*n_1
)//10
    n_3
=str%10
    
    print('B'*n_1
,end
='')
    print('S'*n_2
,end
='')
    for i 
in range(n_3
):
        print(i
+1,end
='')
func
(str)
 
2.1001 害死人不偿命的(3n+1)猜想 (15分)
 
num
=int(input("请输入:"))
count
=0
while num
!=1:
    if(num
%2==0):
        num
=num
/2
    else:
        num
=(3*num
+1)/2
    count
+=1
print(count
)
                
                
                
        
    
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