Initial commit

2024/7/one.py

@@ -0,0 +1,34 @@
+#!/usr/bin/env python3
+
+import sys
+
+input_file = sys.argv[1]
+
+with open(input_file) as fd:
+    lines = [line.rstrip() for line in fd.readlines()]
+
+final = 0
+for line in lines:
+    spli = line.split()
+    res = int(spli[0][:-1])
+    nums = [int(num) for num in spli[1:]]
+
+    def check(tot: int, nums: list[int]) -> bool:
+        for op in (int.__add__, int.__mul__):
+            ntot = op(tot, nums[0])
+            if ntot > res:
+                continue
+            if len(nums) == 1:
+                if ntot == res:
+                    return True
+            else:
+                if check(ntot, nums[1:]):
+                    return True
+        return False
+
+    if check(nums[0], nums[1:]):
+        final += res
+
+print(final)
+
+# 2664444091381: too low

2024/7/two.py

@@ -0,0 +1,37 @@
+#!/usr/bin/env python3
+
+import sys
+
+input_file = sys.argv[1]
+
+with open(input_file) as fd:
+    lines = [line.rstrip() for line in fd.readlines()]
+
+
+def concat(a: int, b: int) -> int:
+    return int(str(a) + str(b))
+
+
+final = 0
+for line in lines:
+    spli = line.split()
+    res = int(spli[0][:-1])
+    nums = [int(num) for num in spli[1:]]
+
+    def check(tot: int, nums: list[int]) -> bool:
+        for op in (int.__add__, int.__mul__, concat):
+            ntot = op(tot, nums[0])
+            if ntot > res:
+                continue
+            if len(nums) == 1:
+                if ntot == res:
+                    return True
+            else:
+                if check(ntot, nums[1:]):
+                    return True
+        return False
+
+    if check(nums[0], nums[1:]):
+        final += res
+
+print(final)