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Educational Codeforces Round 90 (Rated for Div. 2) E.Sum of Digits(思惟題/貪心+數位和)
時間 2020-07-26
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題目 計f(x)爲x的數位和(如f(102)=1+0+2),t(t<=150)組樣例,c++ 每次給出n(n<=150)和k(0<=k<=9),求知足f(x)+f(x+1)+...+f(x+k)=n的最小的非負整數xspa 思路來源 jiangly代碼code 題解 ①(打表假題)共k+1個數,則數位和這種東西是級別的,string 設n=150,則k=0大體爲1e18(9*17=153),k=1
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Educational Codeforces Round 90 (Rated for Div. 2)
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