摘要：
Acacius is studying strings theory. Today he came with the following problem. You are given a string ss of length nn consisting of lowercase English l 阅读全文
摘要：
1） 添加工具栏：右键点击菜单栏下方选择AddToolBar，然后将最下方的那些QAction拖到相应位置即可。右键工具栏可以添加分隔符。 2） 工具栏是可以上下左右停靠的。将其moveable属性取消勾选则变成不可移动的。allowedAreas为允许停靠的位置 3） 浮动窗口对应控件的Dock 阅读全文
摘要：
You are given a graph consisting of nn vertices and mm edges. It is not guaranteed that the given graph is connected. Some edges are already directed 阅读全文