Language: C++

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

int main(){
    string s;
    cin >> s;
    int n=s.size()+1;
    vector<int> a(n,-1);

//0の入力
    if(s.at(0)=='<') a.at(0)=0;
    for(int i=1; i<n-1; i++){
        if(s.at(i-1)!=s.at(i)) a.at(i)=0;
    }
    if(s.at(n-2)=='>') a.at(n-1)=0;

    long long int num=0;
    long long int ans=0;
    for(int i=0; i<n-1; i++){
        num=0;
        if(a.at(i)==0){
            while(s.at(i)=='<'){
                i++;
                num++;
                a.at(i)=num;
                if(i==n-1) break;
            }
        }
    }
/*    for(int i=0; i<n; i++){
        cout << a.at(i) << endl;
    }
    cout << endl;*/

    for(int i=n-1; i>0; i--){
        num=0;
        if(a.at(i)==0){
            while(s.at(i-1)=='>'){
                i--;
                num++;
                a.at(i)=max(a.at(i),num);
                if(i==0) break;
            }
        }
    }

    for(int i=0; i<n; i++){
        ans+=a.at(i);
        //cout << a.at(i) << endl;
    }
    cout << ans << endl;

}


Compiler output:
a.cc: In function 'int main()':
a.cc:41:28: error: no matching function for call to 'max(__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type&, long long int&)'
   41 |                 a.at(i)=max(a.at(i),num);
      |                         ~~~^~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/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:41:28: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   41 |                 a.at(i)=max(a.at(i),num);
      |                         ~~~^~~~~~~~~~~~~
/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:
/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:41:28: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   41 |                 a.at(i)=max(a.at(i),num);
      |                         ~~~^~~~~~~~~~~~~