paizaラーニングレベルアップ問題集の「論理演算を用いた計算のまとめ」をやってみた。

paizaラーニングレベルアップ問題集の論理演算を用いた計算のまとめをやってみました。

---

問題

---

方針

問題文どおりに書けば

\text{not }\left(\left(\text{not }A\text{ and not }B\right)\text{ or not }C\right)\text{ xor }D

ですが、ド・モルガンの法則を用いると

\begin{eqnarray}
&&\text{not }\left(\left(\text{not }A\text{ and not }B\right)\text{ or not }C\right)\text{ xor }D\\
=&&\text{not }\left(\text{not }\left(A\text{ or }B\right)\text{ or not }C\right)\text{ xor }D\\
=&&\text{not }\left(\text{not }\left(\left(A\text{ or }B\right)\text{ and }C\right)\right)\text{ xor }D\\
=&&\left(\left(A\text{ or }B\right)\text{ and }C\right)\text{ xor }D\\
\end{eqnarray}

となります。
勿論、元の式を実装してもいいのですが、今回はド・モルガンの法則を適用した後の式で実装します。

---

C

#include <stdio.h>

int main() {
	int a, b, c, d;
	scanf("%d %d %d %d", &a, &b, &c, &d);
	printf("%d\n", ((a | b) & c) ^ d);
	return 0;
}

#include <stdio.h>

int main() {
	int a, b, c, d;
	scanf("%d %d %d %d", &a, &b, &c, &d);
	printf("%d\n", ((a || b) && c) != d);
	return 0;
}

---

C++

#include <iostream>
using namespace std;

int main() {
	int a, b, c, d;
	cin >> a >> b >> c >> d;
	cout << (((a | b) & c) ^ d) << endl;
	return 0;
}

#include <iostream>
using namespace std;

int main() {
	int a, b, c, d;
	cin >> a >> b >> c >> d;
	cout << (((a || b) && c) != d) << endl;
	return 0;
}

---

C#

using System;

class Program
{
	public static void Main()
	{
		int[] abcd = Array.ConvertAll(Console.ReadLine().Split(), int.Parse);
		int a = abcd[0], b = abcd[1], c = abcd[2], d = abcd[3];
		Console.WriteLine(((a | b) & c) ^ d);
	}
}

using System;

class Program
{
	public static void Main()
	{
		bool[] abcd = Array.ConvertAll(Console.ReadLine().Split(), x => int.Parse(x) != 0);
		bool a = abcd[0], b = abcd[1], c = abcd[2], d = abcd[3];
		Console.WriteLine(((a || b) && c) != d ? 1 : 0);
	}
}

---

Go

package main
import "fmt"

func main() {
	var a, b, c, d int
	fmt.Scan(&a, &b, &c, &d)
	fmt.Println(((a | b) & c) ^ d)
}

package main
import "fmt"

func main() {
	var a, b, c, d int
	fmt.Scan(&a, &b, &c, &d)
	if (((a != 0) || (b != 0)) && (c != 0)) != (d != 0) {
		fmt.Println(1)
	} else {
		fmt.Println(0)
	}
}

---

Java

import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		System.out.println(((sc.nextInt() | sc.nextInt()) & sc.nextInt()) ^ sc.nextInt());
		sc.close();
	}
}

import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		boolean a = sc.nextInt() != 0;
		boolean b = sc.nextInt() != 0;
		boolean c = sc.nextInt() != 0;
		boolean d = sc.nextInt() != 0;
		System.out.println(((a | b) & c) ^ d ? 1 : 0);
		sc.close();
	}
}

---

JavaScript

const [a, b, c, d] = require("fs").readFileSync("/dev/stdin", "utf8").trim().split(' ').map(Number);
console.log(((a | b) & c) ^ d);

const [a, b, c, d] = require("fs").readFileSync("/dev/stdin", "utf8").trim().split(' ').map(Number);
console.log(((a || b) && c) != d ? 1 : 0);

---

Kotlin

import java.util.*

fun main() {
	val sc = Scanner(System.`in`)
	println(((sc.nextInt() or sc.nextInt()) and sc.nextInt()) xor sc.nextInt())
	sc.close()
}

fun main() {
	val (a, b, c, d) = readLine()!!.split(' ').map { it.toInt() != 0 }
	println(if (((a || b) && c) != d) 1 else 0)
}

---

PHP

<?php
	[$a, $b, $c, $d] = array_map("intval", explode(' ', fgets(STDIN)));
	echo (($a | $b) & $c) ^ $d, PHP_EOL;
?>

<?php
	[$a, $b, $c, $d] = array_map("intval", explode(' ', fgets(STDIN)));
	echo (($a || $b) && $c) != $d ? 1 : 0, PHP_EOL;
?>

---

Perl

my ($a, $b, $c, $d) = map { int($_) } split ' ', <STDIN>;
print ((($a | $b) & $c) ^ $d . $/);

my ($a, $b, $c, $d) = map { int($_) } split ' ', <STDIN>;
print ((($a || $b) && $c) != $d ? 1 : 0 . $/);

---

Python3

a, b, c, d = map(int, input().split())
print(((a | b) & c) ^ d)

a, b, c, d = map(int, input().split())
print(int(((a or b) and c) != d))

---

Ruby

a, b, c, d = gets.split.map(&:to_i)
p ((a | b) & c) ^ d

a, b, c, d = gets.split.map { |x| x.to_i != 0 }
p ((a || b) && c) != d ? 1 : 0

---

Scala

import java.util._

object Main extends App{
	val sc = new Scanner(System.in)
	println(((sc.nextInt() | sc.nextInt()) & sc.nextInt()) ^ sc.nextInt())
	sc.close()
}

import scala.io.StdIn._

object Main extends App{
	val Array(a, b, c, d) = readLine().split(' ').map { _.toInt != 0 }
	println(if (((a || b) && c) != d) 1 else 0)
}

---

Swift

let abcd = readLine()!.split(separator: " ").compactMap { Int($0) }
let (a, b, c, d) = (abcd[0], abcd[1], abcd[2], abcd[3])
print(((a | b) & c) ^ d)

let abcd = readLine()!.split(separator: " ").map { Int($0)! != 0 }
let (a, b, c, d) = (abcd[0], abcd[1], abcd[2], abcd[3])
print(((a || b) && c) != d ? 1 : 0)