Merge pull request #1849 from AlgorithmWithGod/JHLEE325

[20260128] BOJ / G5 / 시간 관리 / 이준희

Author: ShinHeeEul

JHLEE325/202601/28 BOJ G5 시간 관리.md

@@ -0,0 +1,54 @@
+```java
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.util.*;
+
+class Job implements Comparable<Job> {
+    int time;
+    int end;
+
+    public Job(int time, int end) {
+        this.time = time;
+        this.end = end;
+    }
+
+    @Override
+    public int compareTo(Job o) {
+        return o.end - this.end;
+    }
+}
+
+public class Main {
+    public static void main(String[] args) throws Exception {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringTokenizer st;
+
+        int N = Integer.parseInt(br.readLine());
+
+        Job[] jobs = new Job[N];
+        for (int i = 0; i < N; i++) {
+            st = new StringTokenizer(br.readLine());
+            int start = Integer.parseInt(st.nextToken());
+            int end = Integer.parseInt(st.nextToken());
+            jobs[i] = new Job(start, end);
+        }
+
+        Arrays.sort(jobs);
+
+        int currentTime = jobs[0].end;
+
+        for (int i = 0; i < N; i++) {
+            if (jobs[i].end < currentTime) {
+                currentTime = jobs[i].end;
+            }
+            currentTime -= jobs[i].time;
+        }
+
+        if (currentTime >= 0) {
+            System.out.println(currentTime);
+        } else {
+            System.out.println("-1");
+        }
+    }
+}
+```