feat: add 11663

11000/11663.cpp

@@ -0,0 +1,29 @@
+#include <iostream>
+#include <algorithm>
+using namespace std;
+
+int points[100001];
+
+int main() {
+    ios::sync_with_stdio(false);
+    cin.tie(NULL); cout.tie(NULL);
+    int n, m;
+    cin >> n >> m;
+    for (int i = 0; i < n; i++) cin >> points[i];
+    sort(points, points + n);
+    while (m--) {
+        int start, end, result;
+        cin >> start >> end;
+        int startIndex = lower_bound(points, points + n, start) - points;
+        int endIndex = lower_bound(points, points + n, end) - points;
+        result = endIndex - startIndex - 1;
+        if (points[startIndex] >= start) result++;
+        if (points[endIndex] == end) result++;
+
+        if (startIndex == n) {
+            cout << 0 << "\n";
+        } else {
+            cout << result << "\n";
+        }
+    }
+}

README.md

@@ -52,7 +52,7 @@
 | 8/6  |                                                                                                                     |                                                                                           |           |
 | 8/7  | [NCPC 2007](https://www.acmicpc.net/category/detail/214) [coci1314-5](https://www.acmicpc.net/category/detail/1230) | [5052](https://www.acmicpc.net/problem/5052) [9935](https://www.acmicpc.net/problem/9935) | 문자열 집합 스택 |
 | 8/8  |                                                                                                                     |                   **_[10825](https://www.acmicpc.net/problem/10825)_**                    |    정렬     |
-| 8/9  |                                                                                                                     |                                                                                           |           |
+| 8/9  |                                                                                                                     |                   **_[11663](https://www.acmicpc.net/problem/11663)_**                    |   이분탐색    |
 | 8/10 |                                                                                                                     |                                                                                           |           |
 | 8/11 |                                                                                                                     |                                                                                           |           |
 | 8/12 |                                                                                                                     |                                                                                           |           |