{}
print("welcome to 21s")
num1=int(input("you go first "))
print(f"curent total is {num1}")
print(f"I choose {4-num1}")
print("current total is 4")
num2=int(input("you again "))
print(f"the current total is {4+num2}")
print(f"I choose {4-num2}")
print("the current total is 8")
num3=int(input("you again "))
print(f"the current total is {4+num3}")
print(f"I choose {4-num3}")
print("the current total is 12")
num4=int(input("you again "))
print(f"the current total is {4+num4}")
print(f"I choose {4-num4}")
print("the current total is 16")
num5=int(input("you again "))
print(f"the current total is {4+num5}")
print(f"I choose {4-num5}")
print("the current total is 20")
print("ha ha you lost")