Submission #2220510

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Source Code Expand

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

public class Main {

	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		List<Integer> list = new ArrayList<>();
		List<Integer> list2 = new ArrayList<>();
		List<String> line = Arrays.asList(br.readLine().split(" "));
		List<String> line2 = Arrays.asList(br.readLine().split(" "));
		list = line.stream().map(Integer::parseInt).collect(Collectors.toList());
		list2 = line2.stream().map(Integer::parseInt).collect(Collectors.toList());
		String bin = Integer.toBinaryString(list.get(1));
		StringBuilder sb = new StringBuilder(bin);
		int result = 0;

		for (int i = 0; i < list.get(0); i++) {
			if (!(bin.length() == list.get(0))) {
				sb.insert(0, "0");
				bin = sb.toString();
			}
		}

		char[] binChar = bin.toCharArray();

		for (int j = 0; j < binChar.length; j++) {
			if (binChar[j] == '1') {
				result = result + list2.get(list2.size() - 1 - j);

			}
		}

		System.out.println(result);
	}
}

Submission Info

Judge Result