摘要:
剪花布条 Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 28776 Accepted Submission(s): 17615 Problem 阅读全文
摘要:
oval-and-rectangle Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 0 Accepted Submission(s): 0 Pr 阅读全文
摘要:
线段树将区间分成若干个子区间,子区间又继续分,直到区间为一个点(区间左值等于右值) 对于父区间[a,b],其子区间为[a,(a+b)/2]和[(a+b)/2+1,b] 用于求区间的值,如区间最值、区间的和等。 代码实现中,约定结点下标从1开始,所以某结点下标为x,那么左儿子下标为2x,右儿子下标为2 阅读全文
摘要:
首先看效果: 输入Hello, 可见输出 int. 打招呼 下面看源码: 阅读全文
摘要:
组件属性,用法 组件位置 更多 阅读全文
摘要:
1.shutil模块 import shutil shutil.make_archive('shutil_archive_test', 'zip', 'D:\pyworkspace\.idea') make_archive函数第一项为压缩成的文件名,第二项为压缩格式,第三项为压缩的目录 shutil.copytree(src, dst, symlinks=False, ignore=None) ... 阅读全文
摘要:
1. class A: def __init__(self, a, b): self.a = a self.b = b print(a, b) class B(A): def __init__(self, aa, bb): 此处最好写成 a,b因为self.a=a 父类是如此,子类亦应如此... 阅读全文
摘要:
from PIL import Image from PIL import ImageDraw from PIL import ImageFont import random class ValidCodeImg: """ 可以生成一个经过降噪后的随机验证码的图片 :param width: 图片宽 阅读全文
摘要:
敌兵布阵 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 121643 Accepted Submission(s): 50879 Problem 阅读全文
摘要:
I Hate It Time Limit: 9000/3000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 100523 Accepted Submission(s): 37845 Pr 阅读全文