Day 1

day1/part2/main.cpp

@@ -0,0 +1,39 @@
+#include <iostream>
+#include <fstream>
+#include <numeric>
+
+using namespace std;
+
+int main() {
+    cout << "Advent of Code 2021 - Day 1 Part 2" << endl;
+
+    ifstream filein("input");
+    string line;
+    int firstSlice[3], secondSlice[3];
+    
+    for(int i = 0; i < 3; i++) {
+        getline(filein, line);
+        firstSlice[i] = stoi(line);
+    }
+
+    int count = 0;
+
+    while (getline(filein, line)) 
+    {
+        for(int i = 1; i < 3; i++) {
+            secondSlice[i-1] = firstSlice[i];
+        }
+
+        secondSlice[2] = stoi(line);
+
+        if(accumulate(secondSlice,secondSlice+3, 0) > accumulate(firstSlice,firstSlice+3, 0)) {
+            count++;
+        }
+
+        copy(begin(secondSlice), end(secondSlice), begin(firstSlice));
+    }
+
+    cout << count << endl;
+
+    return 0;
+}