day 8. ╰(￣ω￣ｏ)

2022/08/01.py

@@ -0,0 +1,57 @@
+#!/usr/bin/env python3
+
+INPUT_FILE = 'input'
+
+def main():
+    field = [[ int(n) for n in line ] for line in map(str.strip, open(INPUT_FILE, 'r').readlines()) ]
+    print(field)
+    # make a temporary copy of the field to track what we've already seen.
+    seen_field = [[ ' ' for y in range(len(field[0])) ] for x in range(len(field))]
+    
+    trees_seen = 0
+    # [y][x]
+    # go top to bottom.
+    for x in range(len(field[0])):
+        height = -1
+        for y in range(len(field)):
+            if field[y][x] > height:
+                height = field[y][x]
+                if seen_field[y][x] != 'T':
+                    seen_field[y][x] = 'T'
+                    trees_seen += 1
+    # go bottom to top.
+    for x in range(len(field[0])):
+        height = -1
+        for y in reversed(range(len(field))):
+            if field[y][x] > height:
+                height = field[y][x]
+                if seen_field[y][x] != 'T':
+                    seen_field[y][x] = 'T'
+                    trees_seen += 1
+
+    # go left to right.
+    for y in range(len(field)):
+        height = -1
+        for x in range(len(field[0])):
+            if field[y][x] > height:
+                height = field[y][x]
+                if seen_field[y][x] != 'T':
+                    seen_field[y][x] = 'T'
+                    trees_seen += 1
+    # go right to left.
+    for y in range(len(field)):
+        height = -1
+        for x in reversed(range(len(field[0]))):
+            if field[y][x] > height:
+                height = field[y][x]
+                if seen_field[y][x] != 'T':
+                    seen_field[y][x] = 'T'
+                    trees_seen += 1
+
+    print(*seen_field, sep='\n')
+    print('trees seen: {}'.format(trees_seen))
+
+
+
+if __name__ == '__main__':
+    main()

2022/08/02.py

@@ -0,0 +1,89 @@
+#!/usr/bin/env python3
+
+INPUT_FILE = 'input'
+
+def main():
+    field = [[ int(n) for n in line ] for line in map(str.strip, open(INPUT_FILE, 'r').readlines()) ]
+    print(*field, sep='\n')
+    print('#' * 20)
+
+    field_height = len(field)
+    field_width = len(field[0])
+
+    # make a temporary copy of the field to track what we've already seen.
+    score_field = [[ 0 for y in range(len(field[0])) ] for x in range(len(field))]
+    
+    # [y][x]
+    # iterate every tree, calculate scenic score 
+    for x in range(len(field[0])):
+        for y in range(len(field)):
+            house_height = field[y][x]
+            view_distances = []
+
+            # check upwards.
+            current_height = -1
+            seen_trees = 0
+            for y_off in reversed(range(0, y)):
+                if field[y_off][x] < house_height:
+                    #if field[y_off][x] > current_height:
+                    #    current_height = field[y_off][x]
+                    seen_trees += 1
+                else:
+                    seen_trees += 1
+                    break
+            view_distances.append(seen_trees)
+
+            # check left.
+            current_height = -1
+            seen_trees = 0
+            for x_off in reversed(range(0, x)):
+                if field[y][x_off] < house_height:
+                    #if field[y][x_off] > current_height:
+                    #    current_height = field[y][x_off]
+                    seen_trees += 1
+                else:
+                    seen_trees += 1
+                    break
+            view_distances.append(seen_trees)
+
+            # check downwards.
+            current_height = -1
+            seen_trees = 0
+            for y_off in range(y+1, field_height):
+                if field[y_off][x] < house_height:
+                    #if field[y_off][x] > current_height:
+                    #    current_height = field[y_off][x]
+                    seen_trees += 1
+                else:
+                    seen_trees += 1
+                    break
+            view_distances.append(seen_trees)
+            
+            # check right.
+            current_height = -1
+            seen_trees = 0
+            for x_off in range(x+1, field_width):
+                if field[y][x_off] < house_height:
+                    #if field[y][x_off] > current_height:
+                    #    current_height = field[y][x_off]
+                    seen_trees += 1
+                else:
+                    seen_trees += 1
+                    break
+            view_distances.append(seen_trees)
+
+            if x == 2 and y == 3:
+                print(view_distances)
+            # get sum.
+            score = 1
+            for num in view_distances:
+                score *= num
+            score_field[y][x] = score
+
+    print(*score_field, sep='\n')
+    best = max([max(_) for _ in score_field])
+    print('Best score: {}'.format(best))
+
+
+if __name__ == '__main__':
+    main()

2022/08/input

@@ -0,0 +1,99 @@
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2022/08/test

@@ -0,0 +1,5 @@
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