Banks 题目链接: http://acm.hust.edu.cn/vjudge/contest/130303#problem/A Description http://7xjob4.com1.z0.glb.clouddn.com/8ce645bf3da25e2731b2fea4c21a985b Input The input file contains several test cases, each of them as described below. On the first line…
F - Palindrometer Time Limit:3000MS Memory Limit:0KB 64bit IO Format:%lld & %llu Submit Status Practice UVALive 4868 Description While driving the other day, John looked down at his odometer, and it read 100000. John was pretty excited about…
题意:给一个的格子图,有 n 行单元格,每行有a[i]个格子,要求往格子中填1~m的数字,要求每个数字大于等于左边的数字,大于上边的数字,问有多少种填充方法. 析:感觉像个DP,但是不会啊...就想暴力试试,反正数据量看起来不大才7,但是...TLE了,又换了一个暴力方法,2秒多过了,差点啊. 其实这是一个状压DP,dp[i][s]表示在第 i 列,在集合 s 中有方法数,那么怎么转移呢,这个还是挺简单的,就是判断第i+1列是不是比第 i 列都大于等于就ok了, 输入时先把行,转化成列,再计算,…