C. Vlad and a Sum of Sum of Digits 分析 在给定的数据规模下,可以直接暴力计算出每个数的数位之和,求出前缀和后就可以在O(1)的时间复杂度下返回答案,因为数位拆分的时间复杂度为O(nlogn),所以总的时间复杂度为O(nlogn+t),其中t为查询次数。 事实上,并没有必要暴力计算出所有的数位之和,举个例子: 123=12×
Codeforces 1373E - Sum of Digits (构造) Description题目大意: f(x)f(x)为十进制下x每一位上的数字的和。求满足f(x)+f(x+1)+...+f(x+k)=nf(x)+f(x+1)+...+f(x+k)=n的最小x。思路由于k特别小(<=9),故x+k至多发生一次进位。x每加1,必有某一位加上1。如果发生进位,那么f(x)f...
Maximum of Maximums of Minimums CodeForces - 872B You are given an array a1, a2, ..., an consisting of n integers, and an integer k. You have to split the array into exactly k non...codeforces—— 770B —— Maximize Sum of Digits B. Maximize Sum of Digits time limit pe...
#include <set> #include <bitset> #include <cstdio> #include <algorithm> #include <cstring> #include <climits> #include <cstdlib> #include <cmath> #include #define maxn 1005 #define maxm 200005 #define eps 1e-10 #define mod 1000000007 #define INF 0x3f3f3f3f #define PI (acos(-1.0...
Petya wonders eagerly what minimum lucky number has the sum of digits equal ton. Help him cope with the task. The single line contains an integern(1 ≤ n ≤ 106) — the sum of digits of the required lucky number. Print on the single line the result — the minimum lucky numb...
Anton has the integerx. He is interested what positive integer, which doesn't exceedx, has the maximum sum of digits. Your task is to help Anton and to find the integer that interests him. If there are several such integers, determine the biggest of them. ...
codewars——Sum of Digits / Digital Root In this kata, you must create a digital root function.A digital root is the recursive sum of all the digits in a number. Given n, take the sum of the digits of n. If that...CodeForces 102B Sum of Digits http://codeforces.com/problemset...
1926C-VladAndASumOfSumOfDigits.cpp 1926D-VladAndDivision.cpp 1927A-MakeItWhite.cpp 1927B-FollowingTheString.cpp 1927C-ChooseTheDifferentOnes.cpp 1927D-FindTheDifferentOnes.cpp 1927E-KleverPermutation.cpp 1928A-RectangleCutting.cpp 1928B-Equalize.cpp 1929A-SashaAndTheBeautifulArray.cpp 1929B-Sasha...
mand a non-negative integers. Your task is to find the smallest and the largest of the numbers that have lengthmand sum of digitss. The required numbers should be non-negative integers written in the decimal base without leading zeroes. ...
I was trying solving this problemhttp://codeforces.com/problemset/problem/489/C. Thinkinh in dp manner, I thought i'll need a table that can tell me the number of i digits that sum to particular j. Then if I want to calculate dp[i][j], then my subproblems will be dp[i-1][sum...