按位索引即可
while True: try: str1 = str(input()) str2 = str(input()) def str_to_num(str3): num1 = 0 a = len(str3) for i in range(a): if(str3[i] == '9'): num1 += 9*(10**(a-i-1)) elif(str3[i] == '8'): num1 += 8*(10**(a-i-1)) elif(str3[i] == '7'): num1 += 7*(10**(a-i-1)) elif(str3[i] == '6'): num1 += 6*(10**(a-i-1)) elif(str3[i] == '5'): num1 += 5*(10**(a-i-1)) elif(str3[i] == '4'): num1 += 4*(10**(a-i-1)) elif(str3[i] == '3'): num1 += 3*(10**(a-i-1)) elif(str3[i] == '2'): num1 += 2*(10**(a-i-1)) elif(str3[i] == '1'): num1 += 1*(10**(a-i-1)) elif(str3[i] == '0'): num1 = num1 return num1 num2 = str_to_num(str1) num3 = str_to_num(str2) print(num2+num3) except: break