题解 | 取近似值

x = str(input())
x1 = int(x.split('.')[0])
x2 = ('0'+'.'+str(x.split('.')[-1]))
if len(x.split('.')[-1]) <= 5:
    if float(x2) >= 0.5:
        x = x1 + 1
        print(x)
    else:
        print(x1)