Language: C++

#include <cstdio>
#include <iostream>
#include <algorithm>
#include <string.h>
#include <stdbool.h>
#include <math.h>
#include <vector>
#include <map>
#include <stack>
#include <queue>
#include <set>
#define pb push_back
#define ll long long int
#define ull unsigned long long int
#define gcd(a,b)    __gcd(a,b)
#define sz sizeof
#define INF 100000000000000LL
#define ms memset

using namespace std;


int main()
{
    //freopen("a.in","r",stdin);
    //freopen("out.txt","w",stdout);
    //std::ios_base::sync_with_stdio(false);
    ll n,len,i,j,x=1,incr=2;
    string fi="",la="";
    map<string,ll>mp;
    vector<ll>v;
    cin>>n;
    while(x<n){
        fi+='>';
        la+='<';
        x+=incr;
        incr++;
    }
    string sec_fi,sec_la;
    sec_fi = fi;
    sec_la = la;

    fi+='>';
    la+='<';

    //----Done----
    ll c1 = max(0LL,abs(x-n));
    if(c1!=0) c1 = max(0LL,((fi.length()-c1)));
    ll c2 = 0;
    if(c1!=c2) swap(fi[c1],la[c2]);
    if(n!=1) cout<<fi<<la<<endl;
    else cout<<"><"<<endl;



    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:48:23: error: no matching function for call to 'max(long long int, long long unsigned int)'
   48 |     if(c1!=0) c1 = max(0LL,((fi.length()-c1)));
      |                    ~~~^~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:48:23: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'long long unsigned int')
   48 |     if(c1!=0) c1 = max(0LL,((fi.length()-c1)));
      |                    ~~~^~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:3:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:48:23: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   48 |     if(c1!=0) c1 = max(0LL,((fi.length()-c1)));
      |                    ~~~^~~~~~~~~~~~~~~~~~~~~~~~