Description Today we play a squiggly sudoku, The objective is to fill a 9*9 grid with digits so that each column, each row, and each of the nine Connecting-sub-grids that compose the grid contains all of the digits from 1 to 9. Left figure is the puz…
DLX精确覆盖模具称号..... Sudoku Time Limit: 10000MS Memory Limit: 65536K Total Submissions: 4416 Accepted: 2143 Description A Sudoku grid is a 16x16 grid of cells grouped in sixteen 4x4 squares, where some cells are filled with letters from A to P (the f…
DLX精确覆盖.....模版题 Sudoku Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 8336 Accepted: 2945 Description In the game of Sudoku, you are given a large 9 × 9 grid divided into smaller 3 × 3 subgrids. For example, . 2 7 3 8 . . 1 . . 1 . .…
题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4069 Problem Description Today we play a squiggly sudoku, The objective is to fill a 9*9 grid with digits so that each column, each row, and each of the nine Connecting-sub-grids that compose the grid co…
Description A Sudoku grid is a 16x16 grid of cells grouped in sixteen 4x4 squares, where some cells are filled with letters from A to P (the first 16 capital letters of the English alphabet), as shown in figure 1a. The game is to fill all the empty g…
Description There is an N*M matrix with only 0s and 1s, (1 <= N,M <= 1000). An exact cover is a selection of rows such that every column has a 1 in exactly one of the selected rows. Try to find out the selected rows. DLX精确覆盖的模板题...... 代码如下: //HU…
直接精确覆盖 开始逐行添加超时了,换成了单点添加 #include <iostream> #include <cstring> #include <cstdio> #include <cmath> #include <vector> using namespace std; #define FOR(i,A,s) for(int i = A[s]; i != s; i = A[i]) #define exp 1e-8 ; int n, m, k,…
Radar Problem Description N cities of the Java Kingdom need to be covered by radars for being in a state of war. Since the kingdom has M radar stations but only K operators, we can at most operate K radars. All radars have the same circular coverage…
Description There is an N*M matrix with only 0s and 1s, (1 <= N,M <= 1000). An exact cover is a selection of rows such that every column has a 1 in exactly one of the selected rows. Try to find out the selected rows. Input There are multiply test ca…
Description The country of jiuye composed by N cites. Each city can be viewed as a point in a two- dimensional plane with integer coordinates (x,y). The distance between city i and city j is defined by d ij = |x i - x j| + |y i - y j|. jiuye want to…
Description Your boss once had got many copies of a treasure map. Unfortunately, all the copies are now broken to many rectangular pieces, and what make it worse, he has lost some of the pieces. Luckily, it is possible to figure out the position of e…
