From 0b080eacb4cc33e1fd4fdc99fd609b68e7f506eb Mon Sep 17 00:00:00 2001 From: Brett Laptop Date: Sat, 7 Dec 2024 17:31:41 -0500 Subject: [PATCH] day7 --- .idea/vcs.xml | 1 + CMakeLists.txt | 2 +- include/day8.h | 24 ++ problems/day7/example | 9 + problems/day7/input | 850 ++++++++++++++++++++++++++++++++++++++++++ src/day7.cpp | 178 +++++++++ src/day8.cpp | 33 ++ src/main.cpp | 2 + 8 files changed, 1098 insertions(+), 1 deletion(-) create mode 100644 include/day8.h create mode 100644 problems/day7/example create mode 100644 problems/day7/input create mode 100644 src/day8.cpp diff --git a/.idea/vcs.xml b/.idea/vcs.xml index bf8431e..0a294a1 100644 --- a/.idea/vcs.xml +++ b/.idea/vcs.xml @@ -3,5 +3,6 @@ + \ No newline at end of file diff --git a/CMakeLists.txt b/CMakeLists.txt index ecc22bc..5f1d528 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -1,5 +1,5 @@ cmake_minimum_required(VERSION 3.25) -project(Advent-Of-Code-2024 VERSION 0.0.5) +project(Advent-Of-Code-2024 VERSION 0.0.6) option(ENABLE_ADDRSAN "Enable the address sanitizer" OFF) option(ENABLE_UBSAN "Enable the ub sanitizer" OFF) diff --git a/include/day8.h b/include/day8.h new file mode 100644 index 0000000..de9d50b --- /dev/null +++ b/include/day8.h @@ -0,0 +1,24 @@ +#pragma once +/* + * Copyright (C) 2024 Brett Terpstra + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#ifndef DAY8_H +#define DAY8_H + +void run_day8(); + +#endif //DAY8_H diff --git a/problems/day7/example b/problems/day7/example new file mode 100644 index 0000000..87b8b25 --- /dev/null +++ b/problems/day7/example @@ -0,0 +1,9 @@ +190: 10 19 +3267: 81 40 27 +83: 17 5 +156: 15 6 +7290: 6 8 6 15 +161011: 16 10 13 +192: 17 8 14 +21037: 9 7 18 13 +292: 11 6 16 20 \ No newline at end of file diff --git a/problems/day7/input b/problems/day7/input new file mode 100644 index 0000000..362e126 --- /dev/null +++ b/problems/day7/input @@ -0,0 +1,850 @@ +37603097701038: 475 8 68 9 9 5 878 38 3 +740556: 418 9 4 4 3 1 9 7 5 12 9 +41216: 2 8 8 46 7 +30984320: 1 928 416 840 80 +31422162: 619 401 2 70 44 +6593961: 94 19 9 4 7 +243973: 7 230 6 97 3 +553110: 5 6 1 49 7 1 13 +569: 567 1 2 +26339: 928 66 19 26 +126563: 12 2 9 56 4 +909583: 92 5 38 59 89 5 +1870: 1 477 993 98 302 +716: 5 72 58 382 1 17 181 +59398283: 75 1 877 79 +8974471341: 9 860 8 3 99 8 552 9 61 +1547232: 83 266 70 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7 +16800: 1 80 6 5 7 +31933349: 94 1 249 38 50 1 49 +10758448637: 671 2 8 96 4 5 4 8 6 3 5 +7384: 11 5 4 45 1 +743720: 835 86 8 69 20 +25992842: 6 71 6 760 7 5 6 6 8 42 +14248281685: 7 206 241 95 501 7 79 +132997195: 6 319 409 72 195 +98010: 7 9 5 922 99 +17104242839121: 3 570 424 28 390 3 9 1 +12612741120: 7 95 504 784 8 6 +505239641290: 1 7 68 4 3 8 222 246 8 2 +8377857: 6 8 563 310 417 +1566246: 187 68 234 4 785 114 diff --git a/src/day7.cpp b/src/day7.cpp index 230638e..d3ee8d5 100644 --- a/src/day7.cpp +++ b/src/day7.cpp @@ -20,6 +20,7 @@ #include #include #include +#include #include #include #include @@ -28,6 +29,183 @@ #include #include +struct test_case_t +{ + blt::i64 calibration; + std::vector values; +}; + +enum class operator_t +{ + PLUS, MULTIPLY, CONCAT +}; + +struct operation_t +{ + const test_case_t* test_case; + std::vector operators; + + explicit operation_t(const test_case_t* test_case): test_case(test_case) + { + for (blt::size_t i = 0; i < test_case->values.size() - 1; ++i) + operators.push_back(operator_t::PLUS); + } + + [[nodiscard]] bool valid() const + { + std::stack value_stack; + + for (const auto v : blt::iterate(test_case->values).rev()) + value_stack.push(v); + + for (const auto op : operators) + { + const auto a = value_stack.top(); + value_stack.pop(); + const auto b = value_stack.top(); + value_stack.pop(); + + switch (op) + { + case operator_t::PLUS: + value_stack.push(a + b); + break; + case operator_t::MULTIPLY: + value_stack.push(a * b); + break; + case operator_t::CONCAT: + value_stack.push(std::stoll(std::to_string(a) + std::to_string(b))); + break; + } + } + + return test_case->calibration == value_stack.top(); + } + + bool next() + { + bool carry = false; + for (blt::size_t i = 0; i < operators.size(); i++) + { + if (carry && operators[i] == operator_t::MULTIPLY) + { + if (i == operators.size() - 1) + return false; + operators[i] = operator_t::PLUS; + } + else if (carry && operators[i] == operator_t::PLUS) + { + operators[i] = operator_t::MULTIPLY; + break; + } + else if (operators[i] == operator_t::PLUS) + { + operators[i] = operator_t::MULTIPLY; + break; + } + else if (operators[i] == operator_t::MULTIPLY) + { + if (i == operators.size() - 1) + return false; + carry = true; + operators[i] = operator_t::PLUS; + } + else + { + BLT_INFO("I don't think this state is possible"); + } + } + return true; + } + + bool next2() + { + bool carry = false; + for (blt::size_t i = 0; i < operators.size(); i++) + { + if (carry && operators[i] == operator_t::CONCAT) + { + if (i == operators.size() - 1) + return false; + operators[i] = operator_t::PLUS; + } + else if (operators[i] == operator_t::PLUS) + { + operators[i] = operator_t::MULTIPLY; + break; + } + else if (operators[i] == operator_t::MULTIPLY) + { + operators[i] = operator_t::CONCAT; + break; + } + else if (operators[i] == operator_t::CONCAT) + { + if (i == operators.size() - 1) + return false; + carry = true; + operators[i] = operator_t::PLUS; + } + else + { + BLT_INFO("I don't think this state is possible"); + } + } + return true; + } +}; + void run_day7() { + const auto file = blt::fs::getLinesFromFile("../problems/day7/input"); + + std::vector test_cases; + + for (const auto& line : file) + { + test_case_t test; + auto data = blt::string::split(line, ":"); + test.calibration = std::stoll(data[0]); + auto values = blt::string::split(data[1], ' '); + for (const auto& value : values) + test.values.push_back(std::stoll(value)); + test_cases.emplace_back(std::move(test)); + } + + blt::i64 valid_test_case_sum = 0; + + for (const auto& test : test_cases) + { + operation_t op{&test}; + do + { + if (op.valid()) + { + BLT_TRACE("Valid test case found! %ld", test.calibration); + valid_test_case_sum += test.calibration; + break; + } + } + while (op.next()); + } + + blt::i64 valid_test_cases_sum2 = 0; + + for (const auto& test : test_cases) + { + operation_t op{&test}; + do + { + if (op.valid()) + { + BLT_TRACE("Valid test case found! %ld", test.calibration); + valid_test_cases_sum2 += test.calibration; + break; + } + } + while (op.next2()); + } + + BLT_INFO("test_case_sum %ld", valid_test_case_sum); + BLT_INFO("test_case_sum2 %ld", valid_test_cases_sum2); } diff --git a/src/day8.cpp b/src/day8.cpp new file mode 100644 index 0000000..c7c3232 --- /dev/null +++ b/src/day8.cpp @@ -0,0 +1,33 @@ +/* + * + * Copyright (C) 2024 Brett Terpstra + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +void run_day8() +{ +} diff --git a/src/main.cpp b/src/main.cpp index dadd448..c347ead 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -7,6 +7,7 @@ #include #include #include +#include int main(const int argc, const char** argv) { @@ -46,6 +47,7 @@ int main(const int argc, const char** argv) run_day7(); break; case 8: + run_day8(); break; default: BLT_INFO("%d is not a day", day);