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Educational Codeforces Round 90 (Rated for Div. 2) E.Sum of Digits(思惟题/贪心+数位和)
时间 2020-07-26
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题目 计f(x)为x的数位和(如f(102)=1+0+2),t(t<=150)组样例,c++ 每次给出n(n<=150)和k(0<=k<=9),求知足f(x)+f(x+1)+...+f(x+k)=n的最小的非负整数xspa 思路来源 jiangly代码code 题解 ①(打表假题)共k+1个数,则数位和这种东西是级别的,string 设n=150,则k=0大体为1e18(9*17=153),k=1
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