update cpp template

ryu19-1 · ryu19-1 · commit 6170daadd558 · 2020-08-28T20:06:50.000+09:00
diff --git a/config/cpp/main.cpp b/config/cpp/main.cpp
@@ -1,5 +1,6 @@
 #include<bits/stdc++.h>
 using namespace std;
+#define rep(i, n) for (int i = 0; i < (int)(n); i++)
 
 int main()
 {
