diff --git a/storage/aloha/py/2025cherry-div1-A.py b/storage/aloha/py/2025cherry-div1-A.py
new file mode 100644
index 0000000..aa16896
--- /dev/null
+++ b/storage/aloha/py/2025cherry-div1-A.py
@@ -0,0 +1,59 @@
+import sys
+
+input = sys.stdin.readline
+
+
+class FibonacciCoin:
+    def __init__(self, n, arr):
+        self.n = n
+        self.arr = arr
+
+    def solve(self) -> list[int]:
+        cnts: list[int] = []
+        curr = [0] * 1_200_000
+        if self.arr[0] == 1 or self.arr[0] == 2:
+            curr[2] = 1
+        else:
+            curr[self.arr[0]] = 1
+        cnts.append(1)
+        for i in range(1, self.n):
+            cnt = cnts[-1]
+            if self.arr[i] == 1 or self.arr[i] == 2:
+                curr[2] += 1
+                if curr[2] == 2:
+                    curr[2] = 0
+                    curr[3] += 1
+                else:
+                    cnt += 1
+                t = 3
+            else:
+                curr[self.arr[i]] += 1
+                t = self.arr[i]
+                cnt += 1
+            while True:
+                if curr[t] >= 1 and curr[t - 1] >= 1:
+                    curr[t] -= 1
+                    curr[t - 1] -= 1
+                    curr[t + 1] += 1
+                    cnt -= 1
+                    t = t + 1
+                elif curr[t] >= 1 and curr[t + 1] >= 1:
+                    s = min([curr[t], curr[t + 1]])
+                    curr[t] -= 1
+                    curr[t + 1] -= 1
+                    curr[t + 2] += 1
+                    cnt -= 1
+                    t = t + 2
+                else:
+                    break
+            cnts.append(cnt)
+        return cnts
+
+
+if __name__ == '__main__':
+    n = int(input())
+    arr = list(map(int, input().split()))
+
+    solver = FibonacciCoin(n, arr)
+
+    print(*solver.solve(), sep=' ')
diff --git a/storage/aloha/py/2025cherry-div1-C.py b/storage/aloha/py/2025cherry-div1-C.py
new file mode 100644
index 0000000..e3a946e
--- /dev/null
+++ b/storage/aloha/py/2025cherry-div1-C.py
@@ -0,0 +1,33 @@
+import sys
+
+input = sys.stdin.readline
+
+
+class ReverseSortTracer:
+    def __init__(self, n, arr):
+        self.n = n
+        self.arr = arr
+
+    def sort_trace(self) -> list[tuple[int, int]]:
+        qx = []
+        sorted_arr = self.arr.copy()
+
+        for i in range(1, self.n):
+            l = i
+            r = sorted_arr.index(i) + 1
+            for ptr in range((r - l + 1) // 2):
+                sorted_arr[l + ptr - 1], sorted_arr[r - 1 - ptr] = \
+                    sorted_arr[r - 1 - ptr], sorted_arr[l + ptr - 1]
+            qx.append((l, r))
+
+        return qx
+
+
+if __name__ == "__main__":
+    n = int(input())
+    arr = list(map(int, input().split()))
+
+    solved = ReverseSortTracer(n, arr).sort_trace()
+    print(len(solved))
+    for pair in solved:
+        print(*pair)
diff --git a/storage/aloha/py/2025cherry-div1-D.py b/storage/aloha/py/2025cherry-div1-D.py
new file mode 100644
index 0000000..bf8bfd0
--- /dev/null
+++ b/storage/aloha/py/2025cherry-div1-D.py
@@ -0,0 +1,26 @@
+import sys
+
+input = sys.stdin.readline
+
+
+class ALOHAGames:
+    def __init__(self):
+        self.t = 1
+        self.f = 0
+        self.res_mineral = 4000
+        self.res_propane = 3000
+
+
+# R1
+
+
+if __name__ == "__main__":
+    print("""8
+max(1,1)
+min(2,3)
+plus(1,1,1)
+plus(3,3,2)
+max(3,3)
+submit(1,1)
+minus(9,9,3)
+submit(3,3)""")
diff --git a/storage/aloha/py/completed/2025cherry-div1-B.py b/storage/aloha/py/completed/2025cherry-div1-B.py
new file mode 100644
index 0000000..58e3d2e
--- /dev/null
+++ b/storage/aloha/py/completed/2025cherry-div1-B.py
@@ -0,0 +1,19 @@
+import sys
+
+input = sys.stdin.readline
+
+
+class SeongjunEncryption:
+    def __init__(self, n, t):
+        self.n = n
+        self.t = t
+
+    def solve(self) -> bool:
+        return self.t[0] == 'A' and self.t[-1] == 'B'
+
+
+if __name__ == "__main__":
+    n = int(input())
+    t = input().strip()
+
+    print("Yes" if SeongjunEncryption(n, t).solve() else "No")