Cp Vs code setup for leetcode and codeforces

cpp.json

{
    "Cp cpp": {
        "prefix": "cpp",
        "body": [
            "#include <bits/stdc++.h>",
            "using namespace std;",
            "",
            "#ifdef aahnik",
            "#include \"dbg.cpp\"",
            "#else",
            "#define dbg(x)",
            "#define std_files",
            "#define display_time",
            "#endif",
            "",
            "#define int long long",
            "#define all(x) (x).begin(), (x).end()",
            "",
            "void solve() {",
            "  $0",
            "}",
            "",
            "int32_t main() {",
            "  // clang-format off",
            "  std_files;",
            "  cin.tie(nullptr)->sync_with_stdio(false);",
            "  int T = 1;",
            "  const auto start_time = chrono::high_resolution_clock::now();",
            "  cin >> T; // testcases",
            "  while (T--)",
            "\tsolve();",
            "  display_time;",
            "  return 0;",
            "}"
        ],
        "description": "cpp template for cp"
    }

    "Leetcpp": {
        "prefix": "leet",
        "body": [
            "#include <bits/stdc++.h>",
            "using namespace std;",
            "",
            "#ifdef aahnik",
            "#include \"dbg.cpp\"",
            "#else",
            "#define dbg(x)",
            "#define std_files",
            "#define display_time",
            "#endif",
            "",
            "#define int long long",
            "#define all(x) (x).begin(), (x).end()",
            "",
            "class Solution {",
            "  public:",
            "  $0",
            "  void test() {",
            "\tcerr << \"# Tests\" << '\\n';",
            "  }",
            "};",
            "",
            "int32_t main() {",
            "  // clang-format off",
            "  std_files;",
            "  cin.tie(nullptr)->sync_with_stdio(false);",
            "  const auto start_time = chrono::high_resolution_clock::now();",
            "  Solution sol = Solution();",
            "  sol.test();",
            "  display_time;",
            "  return 0;",
            "}"
        ],
        "description": "leetcode template"
    }
}

dbg.cpp

#include <bits/stdc++.h>
#include <cmath>

using namespace std;

#define dbg(x)     \
  cerr << #x << " "; \
  _print(x);         \
  cerr << '\n';
template <typename T>
void _print(T t) { cerr << t; }
template <class T, class V>
void _print(pair<T, V> p);
template <class T>
void _print(vector<T> v);
template <class T>
void _print(set<T> v);
template <class T, class V>
void _print(map<T, V> v);
template <class T>
void _print(multiset<T> v);

template <class T, class V>
void _print(pair<T, V> p) {
  cerr << "{";
  _print(p.fi);
  cerr << ",";
  _print(p.se);
  cerr << "}";
}

template <class T>
void _print(vector<T> v) {
  cerr << "[ ";
  for (T i : v) {
    _print(i);
    cerr << " ";
  }
  cerr << "]";
}
template <class T>
void _print(set<T> v) {
  cerr << "[ ";
  for (T i : v) {
    _print(i);
    cerr << " ";
  }
  cerr << "]";
}
template <class T>
void _print(multiset<T> v) {
  cerr << "[ ";
  for (T i : v) {
    _print(i);
    cerr << " ";
  }
  cerr << "]";
}
template <class T, class V>
void _print(map<T, V> v) {
  cerr << "[ ";
  for (auto i : v) {
    _print(i);
    cerr << " ";
  }
  cerr << "]";
}
template <class T, class V>
void _print(unordered_map<T, V> v) {
  cerr << "[ ";
  for (auto i : v) {
    _print(i);
    cerr << " ";
  }
  cerr << "]";
}

#define std_files                     \
  freopen("input.txt", "r", stdin);   \
  freopen("output.txt", "w", stdout); \
  freopen("error.txt", "w", stderr)

#define display_time                                     \
  auto end_time = chrono::high_resolution_clock::now();  \
  chrono::duration<double> diff = end_time - start_time; \
  cerr << "Time Taken : " << diff.count() * 1000 << " ms\n"

leetcode_template.cpp

#include <bits/stdc++.h>
using namespace std;

#ifdef aahnik
#include "dbg.cpp"
#else
#define dbg(x)
#define std_files
#define display_time
#endif

#define int long long
#define all(x) (x).begin(), (x).end()

class Solution {
  public:


  void test() {
    cerr << "# Tests" << '\n';
  }
};
#ifdef aahnik
int32_t main() {
  // clang-format off
  std_files;
  cin.tie(nullptr)->sync_with_stdio(false);
  const auto start_time = chrono::high_resolution_clock::now();
  Solution sol = Solution();
  sol.test();
  display_time;
  return 0;
}
#endif

template.cpp

#include <bits/stdc++.h>
using namespace std;

#ifdef aahnik
#include "dbg.cpp"
#else
#define dbg(x)
#define std_files
#define display_time
#endif

#define int long long
#define all(x) (x).begin(), (x).end()

void solve() {
  int n = 0;
  cin >> n;

  dbg(n);
}

int32_t main() {
  // clang-format off
  std_files;
  cin.tie(nullptr)->sync_with_stdio(false);
  int T = 1;
  const auto start_time = chrono::high_resolution_clock::now();
  cin >> T; // testcases
  while (T--)
    solve();
  display_time;
  return 0;
}