[브론즈 III] 5612번 :: 터널의 입구와 출구 / Java

 

 

 

 

문제

https://www.acmicpc.net/problem/5612

5612번: 터널의 입구와 출구

 

 

 

 

 

코드

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class b5612 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st;
        int n = Integer.parseInt(br.readLine());
        int m = Integer.parseInt(br.readLine());
        int max = m, sum = m;

        for(int i=0; i<n; i++) {
            st = new StringTokenizer(br.readLine());
            int in = Integer.parseInt(st.nextToken());
            int out = Integer.parseInt(st.nextToken());
            sum = sum + in - out;
            if(sum < 0) {
                max = 0;
                break;
            } else if(max < sum) {
                max = sum;
            }
        }

        System.out.println(max);
    }
}