题目链接:http://codeforces.com/contest/480/problem/B 题目描述:     Long Jumps   Valery is a PE teacher at a school in Berland. Soon the students are going to take a test in long jumps, and Valery has lost his favorite ruler! However, there is no reason for d…

传送门: Vjudge:https://vjudge.net/problem/Gym-101170F CF: http://codeforces.com/gym/101170 The city of Bath is a noted olympic training ground—bringing local, national, and even international teams to practice. However, even the finest gymnasium falls v…

CF 480 E. Parking Lot http://codeforces.com/contest/480/problem/E 题意: 给一个n*m的01矩阵,每次可以将一个0修改为1,求最大全0的矩阵. 分析: 将询问离线,从后往前处理询问,相当于每次将一个1变成0,答案是递增的. 用悬线法或者单调栈来求. 代码: #include<cstdio> #include<algorithm> #include<cstring> #include<cmath>…

1.POJ 3320 2.链接:http://poj.org/problem?id=3320 3.总结:尺取法,Hash,map标记 看书复习,p页书,一页有一个知识点,连续看求最少多少页看完所有知识点 必须说,STL够屌.. #include<iostream> #include<cstring> #include<cmath> #include<queue> #include<algorithm> #include<cstdio>…

题目链接:HUD-2112 HDU Today 思路: 1.最短路spfa模板. 2.map标记建图. 3.考虑距离为0或者-1的情况. 总结:下次map记得清空orz. AC代码: #include<cstdio> #include<map> #include<iostream> #include<queue> using namespace std; const int INF = 0x3f3f3f3f; ; int Map[maxn][maxn]; i…

1.CF #371 (Div. 2)   C. Sonya and Queries  map应用,也可用trie 2.总结:一开始直接用数组遍历,果断T了一发 题意:t个数,奇变1,偶变0,然后与问的匹配. #include<bits/stdc++.h> #define max(a,b) a>b?a:b #define F(i,a,b) for (int i=a;i<=b;i++) #define mes(a,b) memset(a,b,sizeof(a)) #define INF…

题目链接:单词问题 找一个字符串里的所有单词,重复的只输出一次.关于map函数key值是字符串的问题一直比较含糊... 挣扎了一番,大概是,map的key值是char型数组的时候,标记的是地址,于是有map[char *, int]mp;然而..这就并没有什么卵用了吧.. 然后...如果是string的话...怎么能让map认识这个字符串呢..string.resize(num);的作用应该就是在字符串末尾加上了结束符...然后...每次增加一个字符的时候..如果已经遇上了结束符...是不可以的…

C. Cinema time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Moscow is hosting a major international conference, which is attended by n scientists from different countries. Each of the scient…

Description Jessica's a very lovely girl wooed by lots of boys. Recently she has a problem. The final exam is coming, yet she has spent little time on it. If she wants to pass it, she has to master all ideas included in a very thick text book. The au…

题目链接 https://www.patest.cn/contests/gplt/L1-005 题意 有一个 考生号,一个试机座位,一个考试座位,给出试机座位,查询 考生号和考试座位 思路 MAP + 结构体 AC代码 #include <iostream> #include <cstdio> #include <algorithm> #include <cmath> #include <deque> #include <vector>…