Description A math instructor is too lazy to grade a question in the exam papers in which students are supposed to produce a complicated formula for the question asked. Students may write correct answers in different forms which makes grading very ha…

Problem Description A math instructor is too lazy to grade a question in the exam papers in which students are supposed to produce a complicated formula for the question asked. Students may write correct answers in different forms which makes grading…

  Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 3721   Accepted: 1290 Description A math instructor is too lazy to grade a question in the exam papers in which students are supposed to produce a complicated formula for the question ask…

题目链接:http://poj.org/problem?id=1686 思路分析:该问题为表达式求值问题,对于字母使用浮点数替换即可,因为输入中的数字只能是单个digit. 代码如下: #include <iostream> #include <cstring> #include <cstdio> #include <cmath> #include <cstdlib> #include <string> using namespace…

因为这个题目说明了优先级的规定,所以可以从左到右直接运算,在处理嵌套括号的时候,可以使用递归的方法,给定每一个括号的左右边界,伪代码如下: int Cal(){ if(括号)  sum += Cal(); else sum += num; return sum; } 但是这个题目着实坑了我一下,见过WA了,没见过TLE呢……我因为没有看到有空格这个条件,无线TLE,又是消除函数又是改用数组模拟栈,其实就是读入出错和忘记了处理空格,改了之后,成功AC了.代码如下: #include<iostrea…

原题目网址:http://poj.org/problem?id=1686 题目中文翻译: Description 数学教师懒得在考卷中给一个问题评分,因为这个问题中,学生会为所问的问题提出一个复杂的公式,但是学生可以用不同的形式写出正确的答案,这使得评分非常困难. 所以,教师需要计算机程序员的帮助,或许你可以提供帮助. 你应该编写一个程序来阅读不同的公式,并确定它们是否在算术上相同.   Input 输入的第一行包含一个整数N(1 <= N <= 20),即测试用例的数量. 在第一行之后,每个…

-----------------------------最优化问题------------------------------------- ----------------------常规动态规划  SOJ1162 I-Keyboard  SOJ1685 Chopsticks SOJ1679 Gangsters SOJ2096 Maximum Submatrix  SOJ2111 littleken bg SOJ2142 Cow Exhibition  SOJ2505 The County…

Description A math instructor is too lazy to grade a question in the exam papers in which students are supposed to produce a complicated formula for the question asked. Students may write correct answers in different forms which makes grading very ha…

Description A math instructor is too lazy to grade a question in the exam papers in which students are supposed to produce a complicated formula for the question asked. Students may write correct answers in different forms which makes grading very ha…

PQJ  1686(栈栈栈) 用栈解决问题 Time Limit:1000MS     Memory Limit:10000KB     64bit IO Format:%I64d & %I64u Description A math instructor is too lazy to grade a question in the exam papers in which students are supposed to produce a complicated formula for th…