#include<stdio.h> int map[5][5]={0,1,0,0,0, 0,1,0,1,0, 0,0,0,0,0, 0,1,1,1,0, 0,0,0,1,0}; int mx[4]={1,-1,0,0}; int my[4]={0,0,1,-1}; int q; typedef struct node { int x; int y; int step; int pre; }node; node dui[100]; int…
C - Sum It Up POJ1564 题意: 给你一个N,然后给你一堆数The numbers in each list appear in nonincreasing order, and there may be repetitions.,让你在这对数里找出一些数,如果他们的和sum==N,则按样例的格式数输出. 思路: 那就是DFS呗,深搜一波,当sum==N时就输出,这里有一个就是排除重复的剪枝.为什么呢? #include<iostream> #include<cstdi…