add rep and ll to template

Author: atcoder-live

template.cpp

@@ -1,5 +1,7 @@
 #include <bits/stdc++.h>
+#define rep(i,n) for (int i = 0; i < (n); ++i)
 using namespace std;
+typedef long long ll;
 
 int main() {
   return 0;