diff --git a/201902738/1013.py b/201902738/1013.py
new file mode 100644
index 0000000..086117c
--- /dev/null
+++ b/201902738/1013.py
@@ -0,0 +1,11 @@
+import sys, re
+
+pattern = r'((100+1+)|(01))+'
+
+n = int(sys.stdin.readline())
+for _ in range(n):
+    s = sys.stdin.readline().strip()
+    if re.fullmatch(pattern, s):
+        print("YES")
+    else:
+        print("NO")
\ No newline at end of file
diff --git a/201902738/10851.py b/201902738/10851.py
new file mode 100644
index 0000000..a477f3e
--- /dev/null
+++ b/201902738/10851.py
@@ -0,0 +1,18 @@
+import sys
+
+N = int(sys.stdin.readline())
+
+card_list = list(map(int, sys.stdin.readline().strip().split()))
+
+M = int(sys.stdin.readline())
+num_list = list(map(int, sys.stdin.readline().strip().split()))
+
+card_dict = {}
+for card in card_list:
+    card_dict[card] = 1
+    
+for num in num_list:
+    if num in card_dict:
+        print(1, end=' ')
+    else:
+        print(0, end=' ')
diff --git a/201902738/1149.py b/201902738/1149.py
new file mode 100644
index 0000000..eb81857
--- /dev/null
+++ b/201902738/1149.py
@@ -0,0 +1,16 @@
+import sys
+
+N = int(sys.stdin.readline())
+RGB = []
+PREV = ""
+
+for i in range(N):
+    r, g, b = map(int, sys.stdin.readline().strip().split())
+    if i == 0:
+        RGB.append([r, g, b])
+    else:
+        RGB.append([r + min(RGB[i - 1][1], RGB[i - 1][2]), 
+                    g + min(RGB[i - 1][0], RGB[i - 1][2]), 
+                    b + min(RGB[i - 1][0], RGB[i - 1][1])])
+
+print(min(RGB[N - 1]))
diff --git a/201902738/1205.py b/201902738/1205.py
new file mode 100644
index 0000000..2d61a69
--- /dev/null
+++ b/201902738/1205.py
@@ -0,0 +1,16 @@
+import sys
+
+N, S, P = map(int, sys.stdin.readline().strip().split())
+tmp = 0
+if N != 0:
+    Scores = list(map(int, sys.stdin.readline().strip().split()))
+    Scores.append(S)
+    Scores.sort(reverse=True)
+    tmp = Scores.index(S) + 1
+    dup = Scores.count(S)
+    if tmp + dup - 1 > P:
+        print(-1)
+    else:
+        print(tmp)
+else:
+    print(1)
diff --git a/201902738/1269.py b/201902738/1269.py
new file mode 100644
index 0000000..e13f915
--- /dev/null
+++ b/201902738/1269.py
@@ -0,0 +1,11 @@
+import sys
+
+A, B = map(int, sys.stdin.readline().strip().split())
+
+setA = set(list(map(int, sys.stdin.readline().strip().split())))
+setB = set(list(map(int, sys.stdin.readline().strip().split())))
+
+sub_setA = setA - setB
+sub_setB = setB - setA
+
+print(len(sub_setA) + len(sub_setB))
diff --git a/201902738/14425.py b/201902738/14425.py
new file mode 100644
index 0000000..7da9967
--- /dev/null
+++ b/201902738/14425.py
@@ -0,0 +1,16 @@
+import sys
+
+N, M = map(int, sys.stdin.readline().strip().split())
+
+str_list = {}
+
+for _ in range(N):
+    str_list[sys.stdin.readline().strip()] = 1
+
+count = 0
+for _ in range(M):
+    input = sys.stdin.readline().strip()
+    if input in str_list:
+        count += 1
+
+print(count)
diff --git a/201902738/1620.py b/201902738/1620.py
new file mode 100644
index 0000000..9436796
--- /dev/null
+++ b/201902738/1620.py
@@ -0,0 +1,14 @@
+import sys
+
+N, M = map(int, sys.stdin.readline().strip().split())
+
+pokemon_dict = {}
+
+for i in range(N):
+    pokemon = sys.stdin.readline().strip()
+    pokemon_dict[pokemon] = str(i + 1)
+    pokemon_dict[str(i + 1)] = pokemon
+
+for _ in range(M):
+    input = sys.stdin.readline().strip()
+    print(pokemon_dict[input])
diff --git a/201902738/1764.py b/201902738/1764.py
new file mode 100644
index 0000000..2d01054
--- /dev/null
+++ b/201902738/1764.py
@@ -0,0 +1,20 @@
+import sys
+
+N, M = map(int, sys.stdin.readline().strip().split())
+
+people = {}
+for _ in range(N):
+    people[sys.stdin.readline().strip()] = 0
+
+count = 0
+for _ in range(M):
+    name = sys.stdin.readline().strip()
+    if name in people:
+        people[name] += 1
+        count += 1
+        
+people = sorted(people.items(), key=lambda x: x[0])
+print(count)
+for k, v in people:
+    if v > 0:
+        print(k)
diff --git a/201902738/25206.py b/201902738/25206.py
new file mode 100644
index 0000000..8c3a24c
--- /dev/null
+++ b/201902738/25206.py
@@ -0,0 +1,13 @@
+import sys
+
+score = {"A+": 4.5, "A0": 4.0, "B+": 3.5, "B0": 3.0, "C+": 2.5, "C0": 2.0, "D+": 1.5, "D0": 1.0, "F": 0.0}
+
+sum_credits = 0
+sum_grade = 0
+for _ in range(20):
+    name, credit, rank = map(str, sys.stdin.readline().strip().split())
+    if rank != "P":
+        sum_credits += float(credit)
+        sum_grade += score[rank] * float(credit)
+
+print("%.6f" % (sum_grade / sum_credits))
diff --git a/201902738/7785.py b/201902738/7785.py
new file mode 100644
index 0000000..edfc797
--- /dev/null
+++ b/201902738/7785.py
@@ -0,0 +1,15 @@
+import sys
+
+N = int(sys.stdin.readline())
+
+people = {}
+for _ in range(N):
+    name, option = sys.stdin.readline().strip().split()
+    if option == 'enter':
+        people[name] = 1
+    else:
+        del(people[name])
+
+people = sorted(people.keys(), reverse=True)
+for person in people:
+    print(person)