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Problem Description As the new term comes, the Ignatius Train Station is very busy nowadays. A lot of student want to get back to school by train(because the trains in the Ignatius Train Station is the fastest all over the world ^v^). But here comes…
Train Problem I Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 25773    Accepted Submission(s): 9729 Problem Description As the new term comes, the Ignatius Train Station is very busy nowadays.…
杭电1002http://acm.hdu.edu.cn/showproblem.php?pid=1022 Train Problem I Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 25276    Accepted Submission(s): 9529 Problem Description As the new term com…
Train Problem I Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 51413    Accepted Submission(s): 19341 Problem Description As the new term comes, the Ignatius Train Station is very busy nowaday…
Description As the new term comes, the Ignatius Train Station is very busy nowadays. A lot of student want to get back to school by train(because the trains in the Ignatius Train Station is the fastest all over the world ^v^). But here comes a proble…
Description   You are given a string consisting of parentheses () and []. A string of this type is said to be correct: (a) if it is the empty string (b) if A and B are correct, AB is correct, (c) if A is correct, (A ) and [A ] is correct. Write a pro…
题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1042 栈的模拟,题目大意是已知元素次序, 判断出栈次序是否合理. 需要考虑到各种情况, 分类处理. 常见错误:使用前未清空栈 使用STL思路较为清晰 代码附上, 欢迎各位大神指点~~ #include <cstdio> #include <stack> #include <iostream> #include <vector> using namespace s…
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…
#include <iostream> #include <vector> #include <stack> #include <algorithm> using namespace std; class Operation { public: vector<int> data; stack <int> iStack; vector<char> opers; vector<int> result; void i…
[链接]:CF [题意]: 给出n个字符串,保证只包含'('和')',求从中取2个字符串链接后形成正确的括号序列的方案数(每个串都可以重复使用)(像'()()'和'(())'这样的都是合法的,像')('和'('这样的是不合法的) 输入: 第一行一个整数n 第二行到第n+1行每行一个字符串 输出: 方案数 [分析]: 1.本来就正常的,只能和正常匹配的一起 2.本来就不正常匹配的,只能和不正常匹配的在一起 那么对于每一个串,我们处理出它还需要cnt1个'('和cnt2个')' 如果cnt1,cn2…