diff --git "a/zinnnn37/202602/6 BOJ G2 \352\274\254\354\235\270 \354\240\204\352\271\203\354\244\204.md" "b/zinnnn37/202602/6 BOJ G2 \352\274\254\354\235\270 \354\240\204\352\271\203\354\244\204.md" new file mode 100644 index 00000000..ecf826e8 --- /dev/null +++ "b/zinnnn37/202602/6 BOJ G2 \352\274\254\354\235\270 \354\240\204\352\271\203\354\244\204.md" @@ -0,0 +1,70 @@ +```java +import java.io.*; +import java.util.ArrayList; +import java.util.List; +import java.util.StringTokenizer; + +public class BJ_1365_꼬인_전깃줄 { + + private static final BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); + private static final BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out)); + private static StringTokenizer st; + + private static int N; + private static int[] pairs; + private static List list; + + public static void main(String[] args) throws IOException { + init(); + sol(); + } + + private static void init() throws IOException { + N = Integer.parseInt(br.readLine()); + + pairs = new int[N]; + st = new StringTokenizer(br.readLine()); + for (int i = 0; i < N; i++) { + pairs[i] = Integer.parseInt(st.nextToken()); + } + + list = new ArrayList<>(); + list.add(0); + } + + private static void sol() throws IOException { + for (int pair : pairs) { + int size = list.size(); + if (list.get(size - 1) < pair) { + list.add(pair); + } else { + int target = lowerBound(pair, size); + + list.set(target, pair); + } + } + int forward = N - list.size() + 1; + + bw.write(forward + ""); + bw.flush(); + bw.close(); + br.close(); + } + + private static int lowerBound(int target, int right) { + int left = 0; + + while (left < right) { + int mid = left + (right - left) / 2; + + if (list.get(mid) >= target) { + right = mid; + } else { + left = mid + 1; + } + } + return right; + } + +} +``` \ No newline at end of file