19-1

19/19-1-1.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+from functools import lru_cache
+
+file = "./input.txt"
+#file = "./ex.txt"
+#file = "./input-e.txt"
+from time import time
+start_time = time()
+
+def read_input(input_file:str, ) -> tuple[list[str], list[str]]:
+    a = []
+    d = []
+    f = open(input_file, "r")
+    for line in f:
+        line = line.strip()
+        if line == "":
+            continue
+        elif "," in line:
+            a = line.replace(" ","").split(",")
+        else:
+            d.append(line)
+    f.close()
+    return a, d
+
+@lru_cache(maxsize=None)
+def check_design(txt: str) -> bool:
+    global alphabet
+    if txt == "":
+        return True
+    for substring in alphabet:
+        if txt.startswith(substring):
+            remaining = txt[len(substring):]
+            if check_design(remaining):
+                return True
+    return False
+
+
+if __name__ == "__main__":
+    alphabet, designs = read_input(file)
+    alphabet.sort(reverse=True)
+    sol = 0
+    for i, design in enumerate(designs):
+        #print(i, design)
+        if check_design(design):
+            sol += 1
+    print(sol)
+
+    print(f'Runtime: {time()-start_time:.8f} s')

19/19-1.py

@@ -0,0 +1,59 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+#file = "./input.txt"
+#file = "./ex.txt"
+file = "./input-e.txt"
+from time import time
+start_time = time()
+
+def read_input(input_file:str, ) -> tuple[list[str], list[str]]:
+    a = []
+    d = []
+    f = open(input_file, "r")
+    for line in f:
+        line = line.strip()
+        if line == "":
+            continue
+        elif "," in line:
+            a = line.replace(" ","").split(",")
+        else:
+            d.append(line)
+    f.close()
+    return a, d
+
+def check_design(txt: str) -> bool:
+    global alphabet
+    memo = {}
+
+    def check(remaining: str) -> bool:
+        if remaining == "":
+            return True
+
+        if remaining in memo:
+            return memo[remaining]
+
+        for substring in alphabet:
+            if remaining.startswith(substring):
+                if check(remaining[len(substring):]):
+                    memo[remaining] = True
+                    return True
+
+        memo[remaining] = False
+        return False
+
+    return check(txt)
+
+
+
+if __name__ == "__main__":
+    alphabet, designs = read_input(file)
+    alphabet.sort(reverse=True)
+    sol = 0
+    for i, design in enumerate(designs):
+        #print(i, design)
+        if check_design(design):
+            sol += 1
+    print(sol)
+
+    print(f'Runtime: {time()-start_time:.8f} s')

19/ex.txt

@@ -0,0 +1,10 @@
+r, wr, b, g, bwu, rb, gb, br
+
+brwrr
+bggr
+gbbr
+rrbgbr
+ubwu
+bwurrg
+brgr
+bbrgwb

19/input-e.txt

@@ -0,0 +1,402 @@
+bwwww, gwwug, ruw, wrbuwrbw, ugugb, rwwgw, wwb, ubgg, rubbwu, wgbuurbb, wrrbru, gwg, uuwwg, ugrrgr, uugrb, grwb, gwrb, buwrwuw, wrb, ruuggwr, rub, guwwr, gwrur, uug, ugguwru, uwr, rwuug, bwgw, ruu, wrbb, wub, wuwgugg, grgwrww, bgubw, wruuuu, bwg, wu, wbrbgr, bgwg, bgrubu, ggru, bgguww, rubgugrw, grwguu, wbg, ugub, urbwuurr, grb, ug, gbu, gbgwurbw, rrrburr, uggru, rubuwrrw, guwgrb, rbr, uruw, gggur, ugwg, bbwrr, ggbbbru, grbug, uuubww, rruug, ubbgwgr, brb, rbbuwbu, ggbrru, uuwugb, ubbgr, bubg, grbb, rgb, rwur, ubuuu, gwuwb, bubgrgr, wuuu, bwwg, urugg, wubuwubw, wgrb, gwggrgu, rwbu, bbbubgrg, rw, ggug, gwbgwbrb, bgugww, ggurrwg, rbbwuwu, wgw, bwb, bbw, urru, ugg, uwguu, wggw, wgr, urrr, urguwr, bbb, bgwbgub, guw, gu, gurwr, rgw, wbb, wggu, brbbg, wbw, rur, gub, rrbbr, uugruww, rbbrb, bwgrgr, rwrurww, grurg, brur, wbr, rgu, gguwr, bwurb, grguw, wuu, rwu, ubu, wbbwwub, urg, rww, bgg, wrwg, ugr, uru, urwggw, buwur, bbrgbwgr, bggbbgw, bbgu, rurrr, ugww, uurbur, brbw, wgwrbr, wbuuw, gwgu, rbw, gbwugwb, gbw, bwwgwr, wurrgwu, wwbg, rburuu, wrruwg, gg, bbbwugg, g, bg, wwguuu, gruwgu, ggrr, ur, bwwru, rwgub, rgwuu, wur, wuwrugw, uw, bubggbr, ubug, gwbbrw, rubgwg, rwbuub, rgrbugb, rbgb, wwgb, brbgw, uwwr, rbrg, uwrrur, uuwb, wug, bwwgrgb, rg, wuwww, bgrb, uurgw, rrburg, wubg, rwrwur, rwb, wrw, bwrw, wg, wwgrubwg, bugb, uuubguuw, gruu, wggruuu, urwu, wuugb, rrwww, bwrugbrb, wrgg, bru, ggww, wrbrrg, ugbu, rwwrrguu, wrg, buguu, ugbbww, urwur, grr, uuw, rrub, rb, bww, wgwr, ubb, bbbuub, ggbrw, rbwb, ubw, uuwg, wgrrbr, grw, gwu, wuwwgr, rwuw, gbbr, bguur, gwgrrw, bbu, ggg, grg, urbwwrr, bwgbuw, bw, gbrw, wbwrb, rurg, uurg, guugb, uww, brrbggbu, ruww, ru, rwguw, wgwbug, wwu, wgwwbur, bu, rguu, uwwwg, rug, wwg, brg, uwu, ubr, burg, ruug, rwr, uurugu, gr, uwubu, rr, rbwrbw, gw, uwwuu, ruuwb, rbg, wwrw, wruubg, bgwgrwbr, wuru, ggrgr, br, rwuu, grgbgg, urw, uub, rgrbb, wbuwb, wgwbg, ubwu, gwb, uu, rrrr, rru, gwr, uuubu, grgw, gbb, gwug, wbggwu, gggr, wr, wuw, wgg, buw, gbuwrwu, gb, uwb, bgubgb, rggbbbu, rgubgggr, rbgr, ruwr, wwr, grgbrb, ugrubr, ubgu, ugw, ugrr, ubg, ubgb, urb, wgb, wbwrbw, rugrr, ub, gbr, bugrg, ugu, rgrw, rrrrurr, bgbw, wgwg, guu, wrrubu, www, wrbu, bgrguwr, wwur, ubgbgug, wbwu, buu, gbgubrw, b, ggr, rrg, wwwb, wgrrrw, ubgrug, rrr, ugbb, wugubbur, bgwb, buwww, ugb, buub, wbrru, wuwguur, gwrggg, bgb, gru, bwwr, bgr, gbbw, wuruw, gbrgu, uwg, ubrg, ggu, bbwg, ugrbug, bbr, r, ugbwub, ggb, bbg, bggwb, bub, gbg, burbr, brw, wbuu, gugbb, uwubg, gbgwr, bgwwru, rgugb, uubgr, bb, gug, rggb, wugub, wrgu, wrwguug, gur, wru, bgbr, bug, bwu, ubbur, uurugb, ubgug, bgrr, bgbb, uwbrrug, bburur, rgr, brbbrw, rrrrwu, rgg, urwuwr, wwgr, bur, rugwg, bgu, urbg, wwrgbuw, rrgwrbb, uuu, grwgg, bwr, wrbrb, wrr, uwuuur, rrubu, ugwrg, rwuwg, wgu, rwru, rrww, urr, rwg, bgw, rbb, bgbubrg, bwbb, u, wggurggu, bubgw, ggw, gugg, ugrru, wbu, rggrrb, ubrgggwg, bwuu, rurb, wgrrg, brr, rubr
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