刷题记录

Problem Description：读入一个只包含 +, -, *, / 的非负整数计算表达式，计算该表达式的值。Input测试输入包含若干测试用例，每个测试用例占一行，每行不超过200个字符，整数和运算符之间用一个空格分隔。没有非法表达式。当一行中只有0时输入结束，相应的结果不要输出。Output对每个测试用例输出1行，即该表达式的值，精确到小数点后2位。Sample Input...

A. Detective BookIvan recently bought a detective book. The book is so interesting that each page of this book introduces some sort of a mystery, which will be explained later. The i-th page contains...

C. Two Shuffled SequencesTwo integer sequences existed initially — one of them was strictly increasing, and the other one — strictly decreasing.Strictly increasing sequence is a sequence of integers...

D. Equalize Them AllYou are given an array a consisting of n integers. You can perform the following operations arbitrary number of times (possibly, zero):Choose a pair of indices (i,j) such that |i...