1

Author: gogsbread

cpp/1.cpp

@@ -0,0 +1,39 @@
+#include "common.h"
+
+namespace {
+long p1(const auto &input) {
+  long m{0};
+  long c{0};
+  for (const auto &l : input) {
+    if (l.empty()) {
+      m = std::max(m, c);
+      c = 0;
+    } else {
+      c += std::atol(l.c_str());
+    }
+  }
+  return std::max(m, c);
+}
+
+long p2(const auto &input) {
+  std::vector<long> m;
+  long c{0};
+  for (const auto &l : input) {
+    if (l.empty()) {
+      m.emplace_back(-c);
+      c = 0;
+    } else {
+      c += std::atol(l.c_str());
+    }
+  }
+  m.emplace_back(-c);
+  std::sort(m.begin(), m.end());
+  return std::abs(m[0] + m[1] + m[2]);
+}
+} // namespace
+
+int main() {
+  const auto &input = gb::advent2021::readIn();
+  gb::advent2021::writeOut(std::to_string(p1(input)));
+  gb::advent2021::writeOut(std::to_string(p2(input)));
+}

cpp/common.h

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+#include <algorithm>
+#include <bitset>
+#include <climits>
+#include <cmath>
+#include <cstdint>
+#include <cstdio>
+#include <deque>
+#include <functional>
+#include <iostream>
+#include <iterator>
+#include <map>
+#include <memory>
+#include <numeric>
+#include <set>
+#include <sstream>
+#include <stack>
+#include <string>
+#include <tuple>
+#include <unordered_map>
+#include <unordered_set>
+#include <variant>
+#include <vector>
+
+using vs = std::vector<std::string>;
+
+namespace gb::advent2021 {
+std::vector<std::string> readIn() {
+  std::vector<std::string> lines;
+  for (std::string l; getline(std::cin, l);) {
+    lines.emplace_back(l);
+  }
+  return lines;
+}
+
+void writeOut(std::string s) { std::cout << s << std::endl; }
+} // namespace gb::advent2021

cpp/meson.build

@@ -0,0 +1,71 @@
+project('advent2022', 'cpp',
+  version : '0.1',
+  default_options : ['warning_level=3', 'cpp_std=c++2a'])
+
+executable('1',
+    '1.cpp',
+    dependencies: [])
+
+# executable('2',
+#     '2.cpp',
+#     dependencies: [])
+
+# executable('3',
+#     '3.cpp',
+#     dependencies: [])
+
+# executable('4',
+#     '4.cpp',
+#     dependencies: [])
+
+# executable('5',
+#     '5.cpp',
+#     dependencies: [])
+
+# executable('6',
+#     '6.cpp',
+#     dependencies: [])
+
+# executable('7',
+#     '7.cpp',
+#     dependencies: [])
+
+# executable('8',
+#     '8.cpp',
+#     dependencies: [])
+
+# executable('9',
+#     '9.cpp',
+#     dependencies: [])
+
+# executable('10',
+#     '10.cpp',
+#     dependencies: [])
+
+# executable('11',
+#     '11.cpp',
+#     dependencies: [])
+
+# executable('12',
+#     '12.cpp',
+#     dependencies: [])
+
+# executable('13',
+#     '13.cpp',
+#     dependencies: [])
+
+# executable('14',
+#     '14.cpp',
+#     dependencies: [])
+
+# executable('15',
+#     '15.cpp',
+#     dependencies: [])
+
+# executable('16',
+#     '16.cpp',
+#     dependencies: [])
+
+# executable('17',
+#     '17.cpp',
+#     dependencies: [])