diff --git a/백준/11000.py b/백준/11000.py
new file mode 100644
index 0000000..359ea7d
--- /dev/null
+++ b/백준/11000.py
@@ -0,0 +1,26 @@
+import sys
+import heapq
+
+input = sys.stdin.readline
+
+n = int(input())
+
+table = []
+
+for _ in range(n):
+    start, end = map(int, input().split())
+    table.append((start, end))
+
+table.sort()
+
+rooms = []
+
+heapq.heappush(rooms, table[0][1])
+
+for i in range(1, n):
+    if table[i][0] >= rooms[0]:
+        heapq.heappop(rooms)
+    
+    heapq.heappush(rooms, table[i][1])
+
+print(len(rooms))
\ No newline at end of file
diff --git a/백준/11004.py b/백준/11004.py
new file mode 100644
index 0000000..70c1f89
--- /dev/null
+++ b/백준/11004.py
@@ -0,0 +1,10 @@
+import sys
+
+input = sys.stdin.readline
+
+N, K = map(int,(input().split(' ')))
+arr = list(map(int, input().split(' ')))
+
+arr.sort()
+
+print(arr[K-1])
diff --git a/백준/11051.Py b/백준/11051.Py
new file mode 100644
index 0000000..03d3885
--- /dev/null
+++ b/백준/11051.Py
@@ -0,0 +1,16 @@
+import sys
+
+input = sys.stdin.readline
+N, K = map(int, input().split())
+D = [[0 for j in range(N+1)] for i in range(N+1)]
+
+for i in range(0, N+1):
+    D[i][0] = 1
+    D[i][i] = 1
+    D[i][1] = i
+ 
+for i in range(1, N+1):
+    for j in range(1, i+1):
+        D[i][j] = (D[i-1][j-1] % 10007 + D[i-1][j] %10007)%10007
+
+print(D[N][K])
\ No newline at end of file
diff --git a/백준/11055.py b/백준/11055.py
new file mode 100644
index 0000000..1adcc3e
--- /dev/null
+++ b/백준/11055.py
@@ -0,0 +1,15 @@
+import sys
+
+input = sys.stdin.readline
+
+n = int(input())
+
+lst = list(map(int, input().split()))
+DP = [lst[i] for i in range(n)]
+
+for i in range(n):
+    for j in range(i):
+        if lst[i] > lst[j]:
+            DP[i] = max(DP[i], DP[j]+lst[i])
+
+print(max(DP))
\ No newline at end of file
diff --git a/백준/11286.py b/백준/11286.py
new file mode 100644
index 0000000..038cbd9
--- /dev/null
+++ b/백준/11286.py
@@ -0,0 +1,14 @@
+import sys
+from queue import PriorityQueue
+
+pq = PriorityQueue()
+num = int(sys.stdin.readline().rstrip())
+
+for i in range(num):
+    temp = int(sys.stdin.readline().rstrip())
+    if(temp==0 and pq.empty()):
+        print('0')
+    elif(temp==0):
+        print(pq.get()[1])
+    else:
+        pq.put((abs(temp),temp))
\ No newline at end of file