diff --git "a/Ukj0ng/202511/16 BOJ G5 \354\225\204\354\232\260\354\234\274 \354\232\260\354\225\204\354\234\274\354\235\264\354\225\274!!.md" "b/Ukj0ng/202511/16 BOJ G5 \354\225\204\354\232\260\354\234\274 \354\232\260\354\225\204\354\234\274\354\235\264\354\225\274!!.md" new file mode 100644 index 00000000..4a35fc92 --- /dev/null +++ "b/Ukj0ng/202511/16 BOJ G5 \354\225\204\354\232\260\354\234\274 \354\232\260\354\225\204\354\234\274\354\235\264\354\225\274!!.md" @@ -0,0 +1,59 @@ +``` +import java.io.*; +import java.util.*; + +public class Main { + private static final BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); + private static final BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out)); + private static List events; + private static int N; + public static void main(String[] args) throws IOException { + init(); + + int answer = sweeping(); + + bw.write(answer + "\n"); + bw.flush(); + bw.close(); + br.close(); + } + + private static void init() throws IOException { + N = Integer.parseInt(br.readLine()); + + events = new ArrayList<>(); + while (N-->0) { + StringTokenizer st = new StringTokenizer(br.readLine()); + int x = Integer.parseInt(st.nextToken()); + int y = Integer.parseInt(st.nextToken()); + + events.add(new int[]{x, y}); + } + + events.sort((o1, o2) -> { + if (o1[0] == o2[0]) return Integer.compare(o2[1], o1[1]); + return Integer.compare(o1[0], o2[0]); + }); + } + + private static int sweeping() { + int length = 0; + int start = -2000000000; + int end = -2000000000; + + for (int[] event : events) { + if (end < event[0]) { + length += end-start; + start = event[0]; + end = event[1]; + } else { + end = Math.max(end, event[1]); + } + } + + length += end-start; + + return length; + } +} +```