백준 Java 2455번 : 지능형 기차

https://www.acmicpc.net/problem/2455

2455번: 지능형 기차

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import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		int total = 0, max = 0;
		for(int i = 0; i < 4; i++) {
			int out = sc.nextInt();
			int in = sc.nextInt();
			total = total - out + in;
			if(max < total) {
				max = total;
			}
		}
		System.out.println(max);
	}
}