题目链接:http://codeforces.com/problemset/problem/459/B 题意: 给出n支花,每支花都有一个漂亮值.挑选最大和最小漂亮值得两支花,问他们的差值为多少,并且有多少种选法(无先后顺序). 现场做时,想到的是:用multimap记录每个漂亮值出现的次数,并不断更新最大最小值. 这个方法很笨,而且multimap的val值是多余的. 需要注意特殊情况:max==min 代码如下: #include<iostream>//A - Pashmak and Fl…

B. Alyona and flowers Problem Description: Let's define a subarray as a segment of consecutive flowers. The mother suggested some set of subarrays. Alyona wants to choose several of the subarrays suggested by her mother. After that, each of the flowe…

Codeforces Round #297 (Div. 2)A. Vitaliy and Pie Time Limit: 2 Sec  Memory Limit: 256 MBSubmit: xxx  Solved: 2xx 题目连接 http://codeforces.com/contest/525/problem/A Description After a hard day Vitaly got very hungry and he wants to eat his favorite pot…

A. Fox And Snake 题目连接: http://codeforces.com/contest/510/problem/A Description Fox Ciel starts to learn programming. The first task is drawing a fox! However, that turns out to be too hard for a beginner, so she decides to draw a snake instead. A sna…

A. Vasya the Hipster Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/581/problem/A Description One day Vasya the Hipster decided to count how many socks he had. It turned out that he had a red socks and b blue socks. Accordi…

B. Anatoly and Cockroaches 题目连接: http://codeforces.com/contest/719/problem/B Description Anatoly lives in the university dorm as many other students do. As you know, cockroaches are also living there together with students. Cockroaches might be of tw…

A. Brain's Photos 题目连接: http://www.codeforces.com/contest/707/problem/A Description Small, but very brave, mouse Brain was not accepted to summer school of young villains. He was upset and decided to postpone his plans of taking over the world, but t…

A. Free Ice Cream 题目连接: http://www.codeforces.com/contest/686/problem/A Description After their adventure with the magic mirror Kay and Gerda have returned home and sometimes give free ice cream to kids in the summer. At the start of the day they hav…

A. Vanya and Fence 题目连接: http://www.codeforces.com/contest/677/problem/A Description Vanya and his friends are walking along the fence of height h and they do not want the guard to notice them. In order to achieve this the height of each of the frien…

题目链接:http://codeforces.com/contest/459/problem/D D. Pashmak and Parmida's problem time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output Parmida is a clever girl and she wants to participate in O…