package hanqi; import java.util.Scanner; public class Test7 { public static void main(String[] args) { //在主方法中定义一个大小为50的一维整型数组,数组i名为x,数组中存放着{1,3,5,…,99}输出这个数组中的所有元素,每输出十个换一行 int [] x=new int[50]; int a =1; for(int i=0;i<50;i++) { x[i]=a; a+=2; } for(…
题目: 传送门 题意: 给你一个 n * m 的文本串 T, 再给你一个 r * c 的模式串 S: 问模式串 S 在文本串 T 中出现了多少次. 解: 法一: AC自动机 (正解) 670ms 把模式串的每一行当成一个字符串, 建一个AC自动机. 然后设cnt[ x ][ y ] 表示文本串中,以 (x, y) 这个点为矩阵右上角的点,且矩阵大小为 r * c的矩阵与模式串匹配了多少行. 那最终统计答案的时候, 只需要 o(n * m) 枚举所有点,记录那些 cnt[ x ][ y ] ==…
A. Bus to Udayland time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output ZS the Coder and Chris the Baboon are travelling to Udayland! To get there, they have to get on the special IOI bus. The…
A. Cakeminator time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given a rectangular cake, represented as an r × c grid. Each cell either has an evil strawberry, or is empty. For exam…
较早的编译器是不同意这样做的,所以一些书籍比方以Tc解说的书本都说数组的下标不能是变量.在vc6.0下亦是如此. 只是在一些较新的编译器如dev c++已经支持了,例如以下代码不会报错 #include <stdio.h> #include <stdlib.h> int main() { int a; int i; scanf("%d",&a); int c[a]; for( i =0 ;i<a;i++) scanf("%d",…
一.Description Given a two-dimensional array of positive and negative integers, a sub-rectangle is any contiguous sub-array of size 1*1 or greater located within the whole array. The sum of a rectangle is the sum of all the elements in that rectangle.…