Estoy intentando hacer años anteriores

2019/day_2/program_alarm.cc

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+#include <vector>
+#include <iostream>
+#include <fstream>
+#include <string>
+
+#include "intcode.hh"
+
+std::vector<int> read_input_file() {
+  std::ifstream file("input");
+  std::vector<int> data;
+  std::string line;
+
+  while(std::getline(file, line, ',')) 
+    data.push_back(std::stoi(line));
+
+  return data;
+}
+
+void solve_a(std::vector<int> memory) {
+  memory[1] = 12;
+  memory[2] = 2;
+
+  auto vm = IntCode(memory);
+  std::cout << vm.get(0) << std::endl;
+}
+
+void solve_b(std::vector<int> memory) {
+  for(int x = 0; x < 99; x++){
+    for(int y = 0; y < 99; y++){
+      memory[1] = x;
+      memory[2] = y;
+
+      auto vm = IntCode(memory);
+      if(vm.get(0) == 19690720) 
+        std::cout << x << ", " << y << " = " << (100 * x) + y << std::endl;
+    }
+  }
+}
+
+int main() {
+  auto memory = read_input_file();
+
+  solve_a(memory);
+  solve_b(memory); 
+
+  return 0;
+}