백준 2460 Java

https://www.acmicpc.net/problem/2460

2460번: 지능형 기차 2

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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;
 
public class Main {
 
	public static void main(String[] args)throws IOException{
			
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int[][] train=new int[10][2];
		int Max=0,tmp=0;
		for(int i=0;i<10;i++) {
			StringTokenizer st = new StringTokenizer(br.readLine(), " ");
			train[i][0]=Integer.parseInt( st.nextToken() );//내린사람
			train[i][1]=Integer.parseInt( st.nextToken() );//탄사람
		}

		
		Max=tmp=train[0][1]; //처음 탄 사람 
		
		for(int i=1;i<10;i++) {
			tmp=(tmp-train[i][0])+train[i][1];
			if(Max<=tmp) {
				Max=tmp;
			}
		}
		
		System.out.println(Max);

	}
}