flag =0

for xt in ['A','B','C','D']:
    if(xt!='A')+(xt=='D')+(xt=='B')+(xt!='D')==1:
        print(xt,"shi xiao tou")
        flag=1
if flag==1 :
        if xt=='A':
                print("shuo zhen hua de shi D ")
        if xt=='B':
                print("shuo jia hua de shi B")
        if xt=='C':
                print("shuo zhen hua de shi A")
        if xt=='D':
                print("shuo jia hua de shi D")                

bde973061aee01105996e9047881d467e6fe6f0c
<mask token>

<mask token>
for xt in ['A', 'B', 'C', 'D']:
    if (xt != 'A') + (xt == 'D') + (xt == 'B') + (xt != 'D') == 1:
        print(xt, 'shi xiao tou')
        flag = 1
if flag == 1:
    if xt == 'A':
        print('shuo zhen hua de shi D ')
    if xt == 'B':
        print('shuo jia hua de shi B')
    if xt == 'C':
        print('shuo zhen hua de shi A')
    if xt == 'D':
        print('shuo jia hua de shi D')

flag = 0
for xt in ['A', 'B', 'C', 'D']:
    if (xt != 'A') + (xt == 'D') + (xt == 'B') + (xt != 'D') == 1:
        print(xt, 'shi xiao tou')
        flag = 1
if flag == 1:
    if xt == 'A':
        print('shuo zhen hua de shi D ')
    if xt == 'B':
        print('shuo jia hua de shi B')
    if xt == 'C':
        print('shuo zhen hua de shi A')
    if xt == 'D':
        print('shuo jia hua de shi D')

flag =0

for xt in ['A','B','C','D']:
    if(xt!='A')+(xt=='D')+(xt=='B')+(xt!='D')==1:
        print(xt,"shi xiao tou")
        flag=1
if flag==1 :
        if xt=='A':
                print("shuo zhen hua de shi D ")
        if xt=='B':
                print("shuo jia hua de shi B")
        if xt=='C':
                print("shuo zhen hua de shi A")
        if xt=='D':
                print("shuo jia hua de shi D")                
