Solve 2024 day 2 part 1

2024/day-02/day-02.pro

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+TEMPLATE = app
+CONFIG += console c++17
+CONFIG -= app_bundle
+CONFIG -= qt
+
+SOURCES += \
+        main.cpp

2024/day-02/main.cpp

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+#include <fstream>
+#include <iostream>
+#include <sstream>
+#include <vector>
+
+using namespace std;
+
+int main()
+{
+    vector<vector<int>> list;
+
+    {
+        ifstream inputFile("input");
+        string line;
+        for (size_t i = 0; getline(inputFile, line); i++) {
+            list.push_back({});
+            stringstream stream(line);
+            int value;
+            while (stream >> value) {
+                list[i].push_back(value);
+            }
+            cout << endl;
+        }
+    }
+
+    // Part one
+    int numberOfSafeReports = 0;
+    for (vector<int> report : list) {
+        bool safe = true;
+        bool increasing = report[0] < report[1];
+        int previousLevel = report[0];
+        for (size_t i = 1; i < report.size(); i++) {
+            int currentLevel = report[i];
+            if (increasing) {
+                if (previousLevel >= currentLevel || currentLevel - previousLevel > 3) {
+                    safe = false;
+                    break;
+                }
+            } else {
+                if (previousLevel <= currentLevel || previousLevel - currentLevel > 3) {
+                    safe = false;
+                    break;
+                }
+            }
+            previousLevel = currentLevel;
+        }
+        numberOfSafeReports += safe;
+    }
+    cout << "Number of safe reports: " << numberOfSafeReports << endl;
+}