Added 2020 (python)

2020/3/input

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2020/3/prog.py

@@ -0,0 +1,69 @@
+def get_file_input(filename: str):
+    ret = []
+    with open(filename, "r") as f:
+        for line in f.readlines():
+            ret.append(line.strip())
+    return ret
+
+def main(use_sample_input = True, part = 1): 
+    sample = [ 
+            "..##.......",
+            "#...#...#..",
+            ".#....#..#.",
+            "..#.#...#.#",
+            ".#...##..#.",
+            "..#.##.....",
+            ".#.#.#....#",
+            ".#........#",
+            "#.##...#...",
+            "#...##....#",
+            ".#..#...#.#"
+            ]
+    
+    s = sample if use_sample_input else get_file_input("input")
+
+    if part == 1:
+        expected_result = 7
+        res = get_result(s, 3, 1)
+    else:
+        expected_result = 336
+        slopes = {
+                (1, 1),
+                (3, 1),
+                (5, 1),
+                (7, 1),
+                (1, 2)
+                }
+
+        tmp = []
+        for slope in slopes:
+            tmp.append(get_result(s, *slope))
+
+        res = mult_all(*tmp)
+
+    if use_sample_input:
+        return f"{res} {res==expected_result}".upper()
+    else:
+        return res
+
+def mult_all(*ns: int):
+    ret = 1
+    for n in ns:
+        ret *= n
+    return ret
+
+def get_result(l: list, inc_x: int, inc_y: int):
+    ret = 0
+    x = 0
+    y = 0
+    while y < len(l):
+        if l[y][x] == "#":
+            ret += 1
+        x += inc_x
+        x %= len(l[0])
+        y += inc_y
+    return ret
+
+print(main(use_sample_input = False, part = 2))
+
+