原题 在集合里找到a+b+c=d的最大的d. 显然枚举a,b,c不行,所以将式子移项为a+b=d-c,然后双向bfs,meet int the middle. #include<cstdio> #include<algorithm> #define N 1010 using namespace std; int a[N],n,cnt; bool b; struct hhh { int data,x,y; bool operator < (const hhh &b) c…
The 15-puzzle has been around for over 100 years; even if you don't know it by that name, you've seen it. It is constructed with 15 sliding tiles, each with a number from 1 to 15 on it, and all packed into a 4 by 4 frame with one tile missing. Let's…
Eight Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 30176 Accepted: 13119 Special Judge Description The 15-puzzle has been around for over 100 years; even if you don't know it by that name, you've seen it. It is constructed with 15…
Eight Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 30176 Accepted: 13119 Special Judge Description The 15-puzzle has been around for over 100 years; even if you don't know it by that name, you've seen it. It is constructed with 15…
Prime Path Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 16272 Accepted: 9195 Description The ministers of the cabinet were quite upset by the message from the Chief of Security stating that they would all have to change the four-dig…
