VvyLw's Library

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:warning: Java/library/math/prefixsum/PrefixSum.java

Depends on

Required by

Code

package library.math.prefixsum;

import java.util.Arrays;

import library.core.Utility;
import library.other.InclusiveScan;

/**
 * 累積和クラス
 * C++のstd::partial_sumとimos法による累積和の両方が可能
 * @see InclusiveScan
 */
public final class PrefixSum extends InclusiveScan {
	private boolean built;
	/**
	 * コンストラクタ
	 * imos法を使った累積和はこっち
	 * @param n
	 */
	public PrefixSum(final int n) {
		super(n);
		built = false;
	}
	/**
	 * コンストラクタ
	 * @param a
	 */
	public PrefixSum(final int[] a) {
		super(a, Long::sum);
		s = Utility.rotate(Arrays.copyOf(s, n + 1), -1);
	}
	/**
	 * コンストラクタ
	 * @param a
	 */
	public PrefixSum(final long[] a) {
		super(a, Long::sum);
		s = Utility.rotate(Arrays.copyOf(s, n + 1), -1);
	}
	/**
	 * 閉区間[l, r]の和を求める
	 * @param l
	 * @param r
	 * @return 閉区間[l, r]の和
	 */
	public final long sum(final int l, final int r){ return s[r] - s[l]; }
	/**
	 * 半開区間[l, r)にxを加算する
	 * @param l
	 * @param r
	 * @param x
	 */
	public final void add(final int l, final int r, final long x) {
		if(built) {
			throw new UnsupportedOperationException("Prefix Sum has been built.");
		}
		s[l] += x;
		s[r] -= x;
	}
	/**
	 * 構築
	 * @return 累積和
	 */
	public final long[] build() {
		assert !built;
		Arrays.parallelPrefix(s, Long::sum);
		built = true;
		return Arrays.copyOf(s, n);
	}
}
Traceback (most recent call last):
  File "/home/runner/.local/lib/python3.12/site-packages/onlinejudge_verify/documentation/build.py", line 71, in _render_source_code_stat
    bundled_code = language.bundle(stat.path, basedir=basedir, options={'include_paths': [basedir]}).decode()
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/runner/.local/lib/python3.12/site-packages/onlinejudge_verify/languages/user_defined.py", line 68, in bundle
    raise RuntimeError('bundler is not specified: {}'.format(str(path)))
RuntimeError: bundler is not specified: Java/library/math/prefixsum/PrefixSum.java
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