Merge branch 'main' of https://github.com/naowalrahman/competitive-programming

Author: naowalrahman

README.md

@@ -3,6 +3,15 @@ This repository is used to store files of code that I have for competitive progr
 
 It is not dedicated to a particular project, but rather as a store for files of code that I use on multiple machines, so as to allow synchronization. 
 
+## Programming Contests/Websites Included:
+* Cornell High School Programming Contest
+* PClassic
+* Traverse CS
+* USACO
+* CodeForces
+* AtCoder
+* CSES
+
 ## Setting up `git` for easy access
 ```sh
 git config --global user.name "Naowal Rahman"

aoc/2023/day1/1.cpp

@@ -0,0 +1,44 @@
+/**
+ * @author      : Naowal Rahman
+ * @created     : 12/01/2023 01:47:13 PM
+ * @filename    : 1
+ */
+
+#include <bits/stdc++.h>
+#include <cctype>
+using namespace std;
+using ll = long long;
+using pii = pair<int, int>;
+template<class T> using V = vector<T>;
+using vi = V<int>;
+using vpi = V<pii>;
+#define FOR(i, s, e) for(int i = s; i < e; i++)
+#define FORE(i, s, e) for(int i = s; i <= e; i++)
+#define ROF(i, s, e) for(int i = (e)-1; i >= s; i--)
+#define ROFE(i, s, e) for(int i = (e); i >= s; i--)
+#define all(x) (x).begin(), (x).end()
+#define sz(x) (int)x.size()
+
+int main() {
+    cin.tie(0) -> sync_with_stdio(0);
+
+    ifstream cin("1.in");
+
+    string s;
+    int ans = 0;
+    while(cin >> s) {
+        vector<char> v;
+        for(char c : s) {
+            if(isdigit(c)) v.push_back(c);
+        }
+        string s2 = "";
+        s2 += v.front();
+        s2 += v.back();
+        ans += stoi(s2);
+    }
+
+    cout << ans;
+
+    return 0;
+}
+