結果

問題 No.2032 Let's Write Multiples!!
ユーザー 👑 hos.lyric
提出日時 2022-08-05 21:51:26
言語 D
(dmd 2.109.1)
結果
AC  
実行時間 454 ms / 3,000 ms
コード長 2,442 bytes
コンパイル時間 876 ms
コンパイル使用メモリ 121,412 KB
実行使用メモリ 6,948 KB
最終ジャッジ日時 2024-06-22 15:57:15
合計ジャッジ時間 8,335 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge4
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 1
other AC * 24
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

import std.conv, std.functional, std.range, std.stdio, std.string;
import std.algorithm, std.array, std.bigint, std.bitmanip, std.complex, std.container, std.math, std.mathspecial, std.numeric, std.regex, std.typecons
    ;
import core.bitop;
class EOFException : Throwable { this() { super("EOF"); } }
string[] tokens;
string readToken() { for (; tokens.empty; ) { if (stdin.eof) { throw new EOFException; } tokens = readln.split; } auto token = tokens.front; tokens
    .popFront; return token; }
int readInt() { return readToken.to!int; }
long readLong() { return readToken.to!long; }
real readReal() { return readToken.to!real; }
bool chmin(T)(ref T t, in T f) { if (t > f) { t = f; return true; } else { return false; } }
bool chmax(T)(ref T t, in T f) { if (t < f) { t = f; return true; } else { return false; } }
int binarySearch(alias pred, T)(in T[] as) { int lo = -1, hi = cast(int)(as.length); for (; lo + 1 < hi; ) { const mid = (lo + hi) >> 1; 
    (unaryFun!pred(as[mid]) ? hi : lo) = mid; } return hi; }
int lowerBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a >= val)); }
int upperBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a > val)); }
// floor(a / b)
Int divFloor(Int)(Int a, Int b) {
  return a / b - (((a ^ b) < 0 && a % b != 0) ? 1 : 0);
}
// sum_{x=l}^r floor((a x + b) / m)
// m > 0
long sumFloors(long m, long a, long b, long l, long r)
in {
  assert(m > 0, "sumFloors: m > 0 must hold");
}
do {
  long sum;
  for (; l <= r; ) {
    const q = divFloor(a, m);
    const aa = a - q * m;
    const ll = divFloor(aa * l + b, m) + 1;
    const rr = divFloor(aa * r + b, m);
    sum += q * ((r + 1) * r / 2 - l * (l - 1) / 2) + r * rr - (l - 1) * (ll - 1) + (rr - ll + 1);
    a = m; m = aa; l = -rr; r = -ll;
  }
  return sum;
}
enum E = 11;
long solve(long N, long K, long C) {
  N /= K;
  long ans;
  foreach (e; 0 .. E) {
    const ten = 10L^^e;
    long num;
    num += sumFloors(10 * ten, K, (10 - C) * ten, 1, N);
    num -= sumFloors(10 * ten, K, (9 - C) * ten, 1, N);
    ans += num;
  }
  return ans;
}
void main() {
  try {
    for (; ; ) {
      const numCases = readInt;
      foreach (caseId; 0 .. numCases) {
        const L = readLong;
        const R = readLong;
        const K = readLong;
        const C = readLong;
        
        long ans;
        ans += solve(R, K, C);
        ans -= solve(L - 1, K, C);
        writeln(ans);
      }
    }
  } catch (EOFException e) {
  }
}
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