Vladik had started reading a complicated book about algorithms containing n pages. To improve understanding of what is written, his friends advised him to read pages in some order given by permutation P = [p1, p2, ..., pn], where pi denotes the numbe…
B. Vladik and Complicated Book time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Vladik had started reading a complicated book about algorithms containing n pages. To improve understanding o…
B. Vladik and Complicated Book time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Vladik had started reading a complicated book about algorithms containing n pages. To improve understanding…
D. Vladik and Favorite Game time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output This is an interactive problem. Vladik has favorite game, in which he plays all his free time. Game field could…
Squats Time Limit: 1000MS Memory Limit: 262144KB 64bit IO Format: %I64d & %I64u Submit Status Description Pasha has many hamsters and he makes them work out. Today, n hamsters (n is even) came to work out. The hamsters lined up and each hamster e…
(点击此处查看原题) 题意分析 已知 n , p , w, d ,求x , y, z的值 ,他们的关系为: x + y + z = n x * w + y * d = p 思维法 当 y < w 的时候,我们最多通过1e5次枚举确定答案 而当 y >= w 的时候,平局所得分为:y * d = (y-w)*d + w*d ,可以看作平局的局数为 y - w ,多出的w*d贡献给 (w*d)/w = d 局胜局,所以胜局为 x + d ,说明此时用x+y局胜局和平局得到的分数可以由 x + d…
http://codeforces.com/problemset/problem/811/B 题意: 给定一个长度为 N 不重复的数字序列,然后对其进行 M 次询问. 每次询问含L,R,X三个值,问如果数字序列中的 L ~ R 位置范围内进行从小到大的排序后,原本位置为 X 的数字是否变了. 由于 N 和 M 的范围都很小(10000),甚至不用模拟排序,对于每次询问直接 L ~ R 过一遍看有多少个元素小于 X 位置的那个,如果这个计数正好等于 X-L,那么位置为 X 的那个元素自然不会变.…