Good Numbers Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3467    Accepted Submission(s): 1099 Problem Description If we sum up every digit of a number and the result can be exactly divided b…

数位DP!!! 代码如下: #include<iostream> #include<stdio.h> #include<algorithm> #include<iomanip> #include<cmath> #include<cstring> #include<vector> #define ll __int64 #define pi acos(-1.0) #define MAX 50000 using namespac…

原题直通车: HDU  4722  Good Numbers 题意: 求区间[a,b]中各位数和mod 10==0的个数. 代码: #include<iostream> #include<cstdio> #include<cstring> #include<cmath> using namespace std; int f[20]; long long work(long long x){ long long ret=0, u=x; int t=0, s=0…

2018 ACM 国际大学生程序设计竞赛上海大都会赛重现赛 J Beautiful Numbers (数位DP) 链接:https://ac.nowcoder.com/acm/contest/163/J?&headNav=acm来源:牛客网 时间限制:C/C++ 8秒,其他语言16秒 空间限制:C/C++ 262144K,其他语言524288K 64bit IO Format: %lld 题目描述 NIBGNAUK is an odd boy and his taste is strange a…

普通的数位DP计算回文串个数 /* HDU 6156 - Palindrome Function [ 数位DP ] | 2017 中国大学生程序设计竞赛 - 网络选拔赛 2-36进制下回文串个数 */ #include <bits/stdc++.h> using namespace std; #define LL long long int t, L, R, l, r, base; int dig[40], tmp[40]; LL dp[40][40][40][2]; LL DFS(int p…

If we sum up every digit of a number and the result can be exactly divided by 10, we say this number is a good number. You are required to count the number of good numbers in the range from A to B, inclusive. InputThe first line has a number T (T <=…

类型:数位DP 题意:定义一个Good Number 为 一个数所有位数相加的和%10==0.问[A,B]之间有多少Good Number. 方法: 正常“暴力”的定义状态:(i,d,相关量) 定义dp[i][d][mod] 为 d开头的i位数中,%10==mod的数的个数 dp[i][d][mod] = sum(dp[i-1][0~9][(mod-d+10)%10] 出口:dp[1][d][mod] = (d==mod); 代码: #include <cstdio> #include <…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4722 Good Numbers Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 422    Accepted Submission(s): 146 Problem Description If we sum up every digit o…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=3555 Problem Description The counter-terrorists found a time bomb in the dust. But this time the terrorists improve on the time bomb. The number sequence of the time bomb counts from 1 to N. If the curre…

传送门:hdu 5898 odd-even number 思路:数位DP,套着数位DP的模板搞一发就可以了不过要注意前导0的处理,dp[pos][pre][status][ze] pos:当前处理的位 pre:上一位的奇偶性 status:截止到上一位的连续段的奇偶性 ze:是否有前导0 /************************************************************** Problem:hdu 5898 odd-even number User: yo…