from decimal import Decimal
#引入decimal模块是因为python不是默认高精浮点数

def main():
    print('==Exercise 4==')

    flag=True
    while flag:
        a = input("pls input a decimal:")
        try: 
            a = Decimal(a)
            flag=False
        except :
            print("pls input a decimal!")
    
    d = a-int(a)

    print(f"Decimal Part: {d if d else 'INTEGER'}")

    print('==End Of Ex4==')
    return 0

if __name__ == '__main__':
    main()