Competitive programming is a thrilling world where problem-solving skills are put to the test under strict time constraints. To excel in this domain, one must be efficient and error-free in their coding. This is where having a pre-made template becomes invaluable. In this article, we will explore the benefits of using a competitive programming template and walk you through the provided template’s essential features.

Streamlining Competitive Programming with a Pre-made Template

Competitive programming is a thrilling world where problem-solving skills are put to the test under strict time constraints. To excel in this domain, one must be efficient and error-free in their coding. This is where having a pre-made template becomes invaluable. In this article, we will explore the benefits of using a competitive programming template and walk you through the provided template’s essential features.

Why Use a Competitive Programming Template?

1. Time Efficiency

Competitive programming competitions often involve solving multiple problems within a limited time frame. Writing boilerplate code for input and output handling, standard data structures, and common utility functions can be time-consuming. A template eliminates this overhead, allowing you to focus on solving the problem at hand.

2. Error Reduction

In the rush of competition, it’s easy to make syntax errors or forget to include necessary header files. A well-crafted template reduces the likelihood of such errors, ensuring that your code runs smoothly from the start.

3. Standardization

Competitive programming involves writing code quickly, often under pressure. A standardized template provides consistency in coding style and structure, making your code easier to read and debug.

Template:-

#include "bits/stdc++.h"
using namespace std;
#define endl '\n'
#define sp <<" "<<
#define pb push_back
#define MOD 1000000007
#define fora(a) for(auto u:a)
#define gcd(a,b) __gcd(a,b)
#define lcm(a,b) (a*(b/gcd(a,b)))
#define all(a) (a).begin(),(a).end()
#define rall(a) (a).rbegin(),(a).rend()
#define test int tc; cin>>tc; while(tc--)
#define forn(i,n) for(auto i=0; i<n; i++)
#define printv(a) {for(auto u:a) cout<<u<<" "; cout<<endl;}
#define printm(a) {for(auto u:a) cout<<u.f sp u.s<<endl;}
#define ll long long
#define pii pair<int, int>
#define pll pair<long long, long long>
#define vi vector
#define vll vector
#define mii map<int, int>
#define si set
#define sc set

FUNCTIONS

#define f(i,s,e) for(long long int i=s;i<e;i++)
#define cf(i,s,e) for(long long int i=s;i<=e;i++)
#define rf(i,e,s) for(long long int i=e-1;i>=s;i--)
#define pb push_back
#define eb emplace_back

//--------------------CODE------------------------------//

void solve ()
{

//write code here

}

int main(){

int t;
cin>>t;
while (t--){
solve();
}
return 0;
}

You can download the same .cpp file from the GitHub link —

GitHub - TanayK07/CPP-Template

*Contribute to TanayK07/CPP-Template development by creating an account on GitHub.*github.com

Exploring the Template

Let’s dissect the pre-made template provided at the beginning of this article to understand its components and how to use them effectively.

Header Files

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

This section includes commonly used standard C++ libraries for competitive programming. The <bits/stdc++.h> header includes all standard libraries, which is handy for most scenarios.

Macros

#define endl '\n'

#define sp <<" "<<

#define pb push_back

#define MOD 1000000007

#define fora(a) for(auto u:a)

#define gcd(a,b) __gcd(a,b)

#define lcm(a,b) (a*(b/gcd(a,b)))

#define all(a) (a).begin(),(a).end()

#define rall(a) (a).rbegin(),(a).rend()

#define test int tc; cin>>tc; while(tc--)

#define forn(i,n) for(auto i=0; i<n; i++)

#define printv(a) {for(auto u:a) cout<<u<<" "; cout<<endl;}

#define printm(a) {for(auto u:a) cout<<u.f sp u.s<<endl;}

#define ll long long

#define pii pair<int, int>

#define pll pair<long long, long long>

#define vi vector

#define vll vector

#define mii map<int, int>

#define si set

#define sc set

These macros provide shortcuts and utility functions that can significantly simplify your code. For example, pb for push_back, endl for newline, and MOD for a frequently used modulo value.

Functions

#define f(i,s,e) for(long long int i=s;i<e;i++)

#define cf(i,s,e) for(long long int i=s;i<=e;i++)

#define rf(i,e,s) for(long long int i=e-1;i>=s;i--)

#define pb push_back

#define eb emplace_back

Streamlining Competitive Programming with a Pre-made Template

Competitive programming is a thrilling world where problem-solving skills are put to the test under strict time constraints. To excel in this domain, one must be efficient and error-free in their coding. This is where having a pre-made template becomes invaluable. In this article, we will explore the benefits of using a competitive programming template and walk you through the provided template’s essential features.

Why Use a Competitive Programming Template?

1. Time Efficiency

Competitive programming competitions often involve solving multiple problems within a limited time frame. Writing boilerplate code for input and output handling, standard data structures, and common utility functions can be time-consuming. A template eliminates this overhead, allowing you to focus on solving the problem at hand.

2. Error Reduction

In the rush of competition, it’s easy to make syntax errors or forget to include necessary header files. A well-crafted template reduces the likelihood of such errors, ensuring that your code runs smoothly from the start.

3. Standardization

Competitive programming involves writing code quickly, often under pressure. A standardized template provides consistency in coding style and structure, making your code easier to read and debug.

Exploring the Template

Let’s dissect the pre-made template provided at the beginning of this article to understand its components and how to use them effectively.

Header Files

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

This section includes commonly used standard C++ libraries for competitive programming. The <bits/stdc++.h> header includes all standard libraries, which is handy for most scenarios.

Macros

#define endl '\n'
#define sp <<" "<<
#define pb push_back
#define MOD 1000000007
#define fora(a) for(auto u:a)
#define gcd(a,b) __gcd(a,b)
#define lcm(a,b) (a*(b/gcd(a,b)))
#define all(a) (a).begin(),(a).end()
#define rall(a) (a).rbegin(),(a).rend()
#define test int tc; cin>>tc; while(tc--)
#define forn(i,n) for(auto i=0; i<n; i++)
#define printv(a) {for(auto u:a) cout<<u<<" "; cout<<endl;}
#define printm(a) {for(auto u:a) cout<<u.f sp u.s<<endl;}
#define ll long long
#define pii pair<int, int>
#define pll pair<long long, long long>
#define vi vector<int>
#define vll vector<long long>
#define mii map<int, int>
#define si set<int>
#define sc set<char>

These macros define loops and other commonly used constructs in competitive programming. For example, f(i,s,e) defines a loop from s to e, cf(i,s,e) defines a loop from s to e (inclusive), and rf(i,e,s) defines a reverse loop from e-1 down to s.

The solve() Function

void solve()
{
// Write code here
}

The solve() function is where you will implement your solution for each problem in the competition. This is where you focus on solving the specific problem statement.

The main() Function

int main()
{
int t;
cin >> t;
while (t--)
{
solve();
}
return 0;
}

The main() function handles input and output for multiple test cases, as is common in competitive programming. It reads the number of test cases, and for each test case, it calls the solve() function.

Conclusion

Using a pre-made template like the one provided in this article can significantly enhance your efficiency and effectiveness in competitive programming. It streamlines the coding process, reduces errors, and provides a standardized structure for your solutions. As you gain experience, you can customize and expand upon this template to suit your specific needs. Happy coding!