Solution to 'Drawing Book' (HackerRank)

Hi all!

Here's, my solution to the problem 'Drawing Book' from HackerRank.

Question link: https://www.hackerrank.com/challenges/drawing-book/problem

#include <bits/stdc++.h>
#define int long long
#define pb push_back
#define fi first
#define se second
#define pii pair<int,int>
using namespace std;

int32_t main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    int n,p;
    cin>>n;
    cin>>p;
    int ans1=p/2;
    if(n%2==0) n++;
    int ans2=(n-p)/2;
    int ans=min(ans1,ans2);
    cout<<ans;
    return 0;
}

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