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题解 | #魔法数字变换#

n = int(input()) cnt = 0 while n != 1: if n % 2 == 0: n = n // 2 cnt += 1 else: n = 3*n+1 cnt += 1 print(cnt)

Python3

2022-06-22

0 334

题解 | #牛牛学数列3#

n = int(input()) m = 0 s = 0 for i in range(1, n+1): m += (-1)**(i-1)*(2*i-1) s += 1/m print("%.3f" % s)

Python3

2022-06-18

0 290

题解 | #牛牛学数列#

n = int(input()) ji = 0 ou = 0 for i in range(1, n+1): if i % 2 == 0: ou += i else: ji += i print(ji-ou)

Python3

2022-06-18

0 286

题解 | #KiKi求质数个数#

for i in range(1,10): for j in range(1,i+1): print("%d*%d=%2d" % (j, i, i*j), end=" ") print()

Python3

2022-06-18

0 275

题解 | #奇偶统计#

n =int(input()) ji = 0 ou = 0 for i in range(1,n+1): if i % 2 == 0: ou += 1 else: ji += 1 print("%d %d" % (ji,ou))

Python3

2022-06-17

0 267

题解 | #[NOIP2008]ISBN号码#

a,b,c,d =input().split("-") num = ''.join([a,b,c]) sum = 0 j=1 for i in num: sum += int(i)*j j += 1 if sum % 11 == 10: s = "X" else: s...

Python3

2022-06-17

0 255

题解 | #小乐乐是否被叫家长#

a,b,c = map(int, input().split()) if (a+b+c)/3 >= 60: print("NO") else: print("YES")

Python3

2022-06-16

0 274

题解 | #获得月份天数#

while 1: try: y,m = map(int, input().split()) list = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31] day = list[m] ...

Python3

2022-06-16

0 293

题解 | #计算一元二次方程#

while 1: try: a,b,c = map(float, input().split()) if a == 0: print("Not quadratic equation") else: ...

Python3

2022-06-16

0 261

题解 | #牛牛的计划#

y,***p(int, input().split()) y1,m1,d1 = map(int, input().split()) if y1>y : print("yes") elif y1==y and m1>=m and d1>=d: print("yes")...

Python3

2022-06-16

0 248