commit 8582780ac903258fc2d4fe5e635d62d7c9680127
Author: Justin Lin <wancat@wancat.cc>
Date:   Sat May 2 15:42:52 2026 +1000

    commit

diff --git a/coconut/coconut.py b/coconut/coconut.py
new file mode 100644
index 0000000..5892610
--- /dev/null
+++ b/coconut/coconut.py
@@ -0,0 +1,15 @@
+n, k = map(int, input().split(" "))
+arr = [int(x) for x in input().strip().split()]
+
+arr.sort()
+
+pairs = 0
+i = 0
+while i < n - 1:
+    if arr[i + 1] - arr[i] <= k:
+        pairs += 1
+        i += 2
+    else:
+        i += 1
+
+print(pairs)
diff --git a/coconut/input_1 b/coconut/input_1
new file mode 100644
index 0000000..b1c5b33
--- /dev/null
+++ b/coconut/input_1
@@ -0,0 +1,2 @@
+6 2
+1 3 5 2 4 6
diff --git a/coconut/input_2 b/coconut/input_2
new file mode 100644
index 0000000..914cf00
--- /dev/null
+++ b/coconut/input_2
@@ -0,0 +1,2 @@
+5 1
+1 5 3 2 4
diff --git a/coconut/input_3 b/coconut/input_3
new file mode 100644
index 0000000..cb519af
--- /dev/null
+++ b/coconut/input_3
@@ -0,0 +1,2 @@
+7 0
+1 3 1 2 2 5 4
diff --git a/e/input_1 b/e/input_1
new file mode 100644
index 0000000..670aec6
--- /dev/null
+++ b/e/input_1
@@ -0,0 +1,7 @@
+5 4
+1 5
+1 2 3 4 5
+1 2 1
+1 3 2
+4 2 3
+5 4 7
diff --git a/e/input_2 b/e/input_2
new file mode 100644
index 0000000..e210098
--- /dev/null
+++ b/e/input_2
@@ -0,0 +1,12 @@
+6 9
+3 4
+2 17 8 6 9 3
+1 2 6
+1 3 10
+1 4 21
+2 3 5
+2 5 7
+3 6 11
+4 5 31
+4 6 4
+5 6 28
diff --git a/e/restaurant.py b/e/restaurant.py
new file mode 100644
index 0000000..64a3dbb
--- /dev/null
+++ b/e/restaurant.py
@@ -0,0 +1,51 @@
+import math
+from queue import PriorityQueue
+
+
+def read_idx(x: str):
+    return int(x) - 1
+
+
+def inputs() -> list[str]:
+    return input().strip(" ").split(" ")
+
+
+V, E = map(int, inputs())
+s, t = map(read_idx, inputs())
+vw = list(map(int, inputs()))  # vertex weight
+graph = [[] for _ in range(V)]
+for _ in range(E):
+    u, v, w = map(read_idx, inputs())
+    w += 1
+    graph[u].append((v, w))
+    graph[v].append((u, w))
+
+newgraph = [[] for _ in range(V)]
+
+for u in range(V):
+    for v, w in graph[u]:
+        newgraph[u].append((v, vw[u] + w))
+
+
+def dijstra(g: list[list[tuple[int, int]]], s: int, t: int) -> float:
+    dist = [math.inf] * V
+    dist[s] = 0
+    q = PriorityQueue()
+    q.put((0, s))
+    while not q.empty():
+        d, u = q.get()
+        if d != dist[u]:
+            continue
+
+        # print(u, d)
+        for v, w in g[u]:
+            if dist[v] > dist[u] + w:
+                dist[v] = dist[u] + w
+                q.put((dist[v], v))
+
+    return dist[t]
+
+
+# print(vw, graph)
+# print(newgraph)
+print(dijstra(newgraph, s, t))
diff --git a/light/input_1 b/light/input_1
new file mode 100644
index 0000000..e76db1d
--- /dev/null
+++ b/light/input_1
@@ -0,0 +1,2 @@
+3
+8 6 7
diff --git a/light/input_2 b/light/input_2
new file mode 100644
index 0000000..2072ff9
--- /dev/null
+++ b/light/input_2
@@ -0,0 +1,2 @@
+5
+4 4 1 9 2
diff --git a/light/input_3 b/light/input_3
new file mode 100644
index 0000000..4f88743
--- /dev/null
+++ b/light/input_3
@@ -0,0 +1,2 @@
+1
+1000
diff --git a/light/light.py b/light/light.py
new file mode 100644
index 0000000..8e094c1
--- /dev/null
+++ b/light/light.py
@@ -0,0 +1,14 @@
+n = int(input())
+suspects = [int(x) for x in input().strip().split(" ")]
+suspects.sort(reverse=True)
+
+if n > 1:
+    result = 0
+    sums = [suspects[0]]
+    for i in range(1, n):
+        sums.append(sums[-1] + suspects[i])
+
+    result = sum(sums[1:])
+    print(result)
+else:
+    print(suspects[0])
diff --git a/peak/input_1 b/peak/input_1
new file mode 100644
index 0000000..99e00b5
--- /dev/null
+++ b/peak/input_1
@@ -0,0 +1,2 @@
+3
+1 2 3
diff --git a/peak/input_2 b/peak/input_2
new file mode 100644
index 0000000..18a4d51
--- /dev/null
+++ b/peak/input_2
@@ -0,0 +1,2 @@
+4
+1 2 3 4
diff --git a/peak/input_3 b/peak/input_3
new file mode 100644
index 0000000..823123c
--- /dev/null
+++ b/peak/input_3
@@ -0,0 +1,2 @@
+5
+10 20 30 40 50
diff --git a/peak/peak.py b/peak/peak.py
new file mode 100644
index 0000000..3ed9650
--- /dev/null
+++ b/peak/peak.py
@@ -0,0 +1,5 @@
+n = int(input())
+input()  # ignore the numbers
+
+ans = 2 ** (n - 1) - 2
+print(max(ans, 0) % 998244353)
diff --git a/picky/input_1 b/picky/input_1
new file mode 100644
index 0000000..bf7e96f
--- /dev/null
+++ b/picky/input_1
@@ -0,0 +1,4 @@
+3 10 10
+2 2 20
+5 2 0
+1 2 12
diff --git a/picky/input_2 b/picky/input_2
new file mode 100644
index 0000000..9866664
--- /dev/null
+++ b/picky/input_2
@@ -0,0 +1,3 @@
+2 0 0
+1 2 4
+2 1 4
diff --git a/picky/input_3 b/picky/input_3
new file mode 100644
index 0000000..5863b99
--- /dev/null
+++ b/picky/input_3
@@ -0,0 +1,3 @@
+2 0 4
+1 1 5
+0 3 5
diff --git a/picky/input_4 b/picky/input_4
new file mode 100644
index 0000000..e69de29
diff --git a/picky/picky.py b/picky/picky.py
new file mode 100644
index 0000000..10e9561
--- /dev/null
+++ b/picky/picky.py
@@ -0,0 +1,80 @@
+import math
+import sys
+
+sys.setrecursionlimit(100000)
+
+
+def inputs():
+    return map(int, input().strip().split(" "))
+
+
+n, wet_c, dry_c = inputs()
+
+costs = [[(math.inf, -1)] * (dry_c + 1) for _ in range(wet_c + 1)]
+costs[0][0] = (0, -1)
+
+bundles = []
+for i in range(n):
+    wet, dry, cost = inputs()
+    bundles.append((wet, dry, cost))
+    if wet <= wet_c and dry <= dry_c:
+        costs[wet][dry] = (cost, i)
+
+
+def get_cost(w, d) -> float:
+    if w == 0 and d == 0:
+        return 0
+
+    if w < 0 or d < 0:
+        return math.inf
+
+    if costs[w][d][1] != -1:
+        print("reusing: ", w, d)
+        return costs[w][d][0]
+
+    print(w, d)
+
+    for i in range(len(bundles)):
+        wet, dry, cost = bundles[i]
+        new_cost = get_cost(w - wet, d - dry) + cost
+        if costs[w][d][0] > new_cost:
+            costs[w][d] = (new_cost, i)
+    return costs[w][d][0]
+
+
+def bottom_up() -> float:
+    for w in range(wet_c + 1):
+        for d in range(dry_c + 1):
+            for i in range(len(bundles)):
+                wet, dry, cost = bundles[i]
+                if wet > w or dry > d:
+                    continue
+                new_cost = costs[w - wet][d - dry][0] + cost
+                if costs[w][d][0] > new_cost:
+                    costs[w][d] = (new_cost, i)
+
+    return costs[wet_c][dry_c][0]
+
+
+def backtrack(w, d) -> list[int]:
+    counter = [0] * n
+    b = costs[w][d][1]
+    while b != -1:
+        counter[b] += 1
+        wet, dry, _ = bundles[b]
+        w -= wet
+        d -= dry
+        b = costs[w][d][1]
+    return counter
+
+
+# c = get_cost(wet_c, dry_c)
+c = bottom_up()
+# print(costs)
+if math.isinf(c):
+    print(-1)
+else:
+    print(c)
+
+    for c in backtrack(wet_c, dry_c):
+        print(c)
diff --git a/q2/q2.py b/q2/q2.py
new file mode 100644
index 0000000..64fdb52
--- /dev/null
+++ b/q2/q2.py
@@ -0,0 +1,25 @@
+a, b = map(int, input().split(" "))
+
+memo = {}
+
+
+def win(i: int, j: int) -> bool:
+    # print(f"kirby: {i}, {j}")
+    if i < j:
+        return win(j, i)
+
+    if j == 1:
+        return True
+    if j <= 0:
+        return False
+    if (i, j) in memo:
+        return memo[(i, j)]
+
+    memo[(i, j)] = not win(i - 1, j) or not win(i, j - 1)
+    return memo[(i, j)]
+
+
+if win(a, b):
+    print("Kirby")
+else:
+    print("Dedede")
diff --git a/q2/q2_test.sh b/q2/q2_test.sh
new file mode 100755
index 0000000..9248818
--- /dev/null
+++ b/q2/q2_test.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+echo "0 2" | python q2.py
+echo "expected: Dedede"
+
+echo "1 2" | python q2.py
+echo "expected: Kirby"
+
+echo "1 2" | python q2.py
+echo "expected: Kirby"
+
+echo "2 2" | python q2.py
+echo "expected: Dedede"
+
+echo "4 2" | python q2.py
+echo "expected: Dedede"
+
+echo "1 50" | python q2.py
+echo "expected: Kirby"
+
+echo "2 3" | python q2.py
+echo "expected: Kirby"
+
+echo "4 3" | python q2.py
+echo "expected: Kirby"
+
+echo "5 2" | python q2.py
+echo "expected: Kirby"
diff --git a/sabzeh/input_1 b/sabzeh/input_1
new file mode 100644
index 0000000..69010fb
--- /dev/null
+++ b/sabzeh/input_1
@@ -0,0 +1 @@
+5 2
diff --git a/sabzeh/input_2 b/sabzeh/input_2
new file mode 100644
index 0000000..0f64a0c
--- /dev/null
+++ b/sabzeh/input_2
@@ -0,0 +1 @@
+5 4
diff --git a/sabzeh/sabzeh.py b/sabzeh/sabzeh.py
new file mode 100644
index 0000000..e9685b6
--- /dev/null
+++ b/sabzeh/sabzeh.py
@@ -0,0 +1,4 @@
+length, n = map(int, input().split(" "))
+
+ans = max(2 * n - length - 1, 0)
+print(ans)
diff --git a/sample/banana_1.py b/sample/banana_1.py
new file mode 100644
index 0000000..ad4ba94
--- /dev/null
+++ b/sample/banana_1.py
@@ -0,0 +1,7 @@
+import math
+
+n, c = map(int, input().split())
+a = [int(input()) for _ in range(n)]
+
+packs = math.ceil(sum(a) / 10)
+print(packs * c)
diff --git a/sample/banana_input b/sample/banana_input
new file mode 100644
index 0000000..0f105b1
--- /dev/null
+++ b/sample/banana_input
@@ -0,0 +1,5 @@
+4 6
+15
+8
+31
+42
diff --git a/sample/freq_flyer.py b/sample/freq_flyer.py
new file mode 100644
index 0000000..fc1f981
--- /dev/null
+++ b/sample/freq_flyer.py
@@ -0,0 +1,18 @@
+n = int(input())
+f = [input() for _ in range(n)]
+# Continue your code here and print your final answer!
+counts = {}
+for l in f:
+    if l in counts:
+        counts[l] += 1
+    else:
+        counts[l] = 1
+
+mk = ""
+ma = -1
+for k in counts:
+    if counts[k] > ma or (counts[k] == ma and k < mk):
+        mk = k
+        ma = counts[k]
+
+print(mk)
diff --git a/sample/input_freq_flyer b/sample/input_freq_flyer
new file mode 100644
index 0000000..99c4cda
--- /dev/null
+++ b/sample/input_freq_flyer
@@ -0,0 +1,11 @@
+10
+japan
+hongkong
+japan
+hongkong
+france
+germany
+france
+germany
+japan
+japan
diff --git a/sample/input_meow b/sample/input_meow
new file mode 100644
index 0000000..367bc01
--- /dev/null
+++ b/sample/input_meow
@@ -0,0 +1,8 @@
+7
+hisss
+triiilll
+buuurrrbllle
+his
+trlll
+burbble
+hello
diff --git a/sample/meow.py b/sample/meow.py
new file mode 100644
index 0000000..15b9fbc
--- /dev/null
+++ b/sample/meow.py
@@ -0,0 +1,21 @@
+import re
+
+t = int(input())
+a = [input() for _ in range(t)]
+# Continue your code here and print your final answer!
+patterns = {
+    "hiss": re.compile("^hiss+$"),
+    "trill": re.compile("^tri+ll+$"),
+    "burble": re.compile("^bu+r+bl+e$"),
+}
+
+
+for line in a:
+    found = False
+    for name in patterns:
+        if patterns[name].match(line):
+            print(name)
+            found = True
+            break
+    if not found:
+        print("human noises")
diff --git a/sample/odd_even_char.py b/sample/odd_even_char.py
new file mode 100644
index 0000000..f4172d1
--- /dev/null
+++ b/sample/odd_even_char.py
@@ -0,0 +1,14 @@
+n = int(input())
+s = input()
+# Continue your code here and print your final answer!
+
+odd_evens = [ord(c) % 2 for c in list(s)]
+odd = 0
+even = 0
+for x in odd_evens:
+    if x == 1:
+        odd += 1
+    else:
+        even += 1
+
+print(odd, even)
diff --git a/season/input_1 b/season/input_1
new file mode 100644
index 0000000..8b5da22
--- /dev/null
+++ b/season/input_1
@@ -0,0 +1,23 @@
+11
+1
+1 2 3 4
+1
+1 3 4 2
+2
+1 2 3 4 4 3 2 1
+1
+1 1 1 3
+1
+1 7 7 2
+1
+7 7 2 1
+1
+7 7 1 2
+1
+1 1 7 2
+1
+1 1 2 2
+1
+1 4 1 2
+3
+1 2 3 3 2 1 4 5 6 1 1 1
diff --git a/season/season.py b/season/season.py
new file mode 100644
index 0000000..aa0b599
--- /dev/null
+++ b/season/season.py
@@ -0,0 +1,59 @@
+import math
+
+n = int(input())
+
+ks = [0] * n
+temp = []
+for i in range(n):
+    k = int(input())
+    ks[i] = k
+    temp.append(list(map(int, input().strip().split(" "))))
+
+# print(ks, temp)
+
+
+def four_season(k: int, temp: list[int]) -> bool:
+    # print(k, temp)
+    max_i = -1
+    max_v = -math.inf
+    min_i = -1
+    min_v = math.inf
+
+    if len(temp) == 4:
+        for i in range(len(temp)):
+            v = temp[i]
+            if v > max_v:
+                max_i = i
+                max_v = v
+            if v < min_v:
+                min_i = i
+                min_v = v
+
+        # print(max_i, max_v, min_i, min_v)
+        if temp[min_i - 2 % 4] == max_v:
+            return True
+        if temp[max_i - 2 % 4] == min_v:
+            return True
+        return False
+
+    for i in range(k):
+        new_temp = [0] * 4
+        for j in range(len(temp)):
+            idx = (i + j) % len(temp)
+            # print(temp, idx)
+            new_temp[j // k] += temp[idx]
+        # print(new_temp)
+        if four_season(1, new_temp):
+            return True
+
+    return False
+
+
+for i in range(n):
+    if len(temp[i]) / ks[i] != 4:
+        print("No")
+        continue
+    if four_season(ks[i], temp[i]):
+        print("Yes")
+    else:
+        print("No")
diff --git a/steak/input_1 b/steak/input_1
new file mode 100644
index 0000000..dc4fe35
--- /dev/null
+++ b/steak/input_1
@@ -0,0 +1,8 @@
+0 0 0
+0 0 1
+0 1 0
+1 0 0
+0 1 1
+1 0 1
+1 1 0
+1 1 1
diff --git a/steak/input_2 b/steak/input_2
new file mode 100644
index 0000000..128d309
--- /dev/null
+++ b/steak/input_2
@@ -0,0 +1,8 @@
+0 4 0
+3 0 0
+3 0 6
+7 3 6
+7 3 0
+4 7 0
+0 4 6
+4 7 6
diff --git a/steak/steak.py b/steak/steak.py
new file mode 100644
index 0000000..a97193f
--- /dev/null
+++ b/steak/steak.py
@@ -0,0 +1,7 @@
+sum_x = 0
+
+for i in range(8):
+    x, _, _ = map(int, input().strip().split(" "))
+    sum_x += x
+
+print(sum_x / 8)
diff --git a/tea b/tea
new file mode 100644
index 0000000..e69de29