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March 21, 2018 14:54
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N,A,B = gets.split.map(&:to_i) #N,A,Bを取得 | |
ans = 0 | |
def calu(n) #各桁の和を計算する関数を宣言 | |
a = n #rubyの関数の仕様を把握してないので一応 | |
@i = 0 #各桁の和を代入する変数 | |
while a >= 10 #各桁の和を求める | |
@i += a%10 | |
a /= 10 | |
end | |
@i += a%10 #1桁の数を拾うために | |
@i | |
end | |
w = 1 | |
while w != N+1 | |
if calu(w) >= A&&calu(w) <= B #各桁の和がA以上B以下の数のみ | |
ans += w | |
end | |
w += 1 | |
end | |
puts ans | |
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