Language: C++

#include <bits/stdc++.h>

using namespace std;
   
int main() {
    string S;
    int K;

    cin >> S >> K;

    for (int i = 0; i < K - 1; i++) {
        S += S;
    }

    string alphabet = "abcdefghijklmnopqrstuvwxyz";
    int count = 0;

    for (int i = 1; i < S.size(); i++) {
        if (S.at(i) == S.at(i - 1)) {
            for (int j = 0; j < alphabet.size(); j++) {
                if (S.at(i - 1) == alphabet.at(j) || S.at(min(i + 1, S.size())) == alphabet.at(j)) {
                    continue;
                }
                S.at(i) = alphabet.at(j);
                if (S.at(i) != S.at(i - 1)) {
                    break;
                }
            }
            count++;
        }
    }

    cout << count << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:62: error: no matching function for call to 'min(int, std::__cxx11::basic_string<char>::size_type)'
   21 |                 if (S.at(i - 1) == alphabet.at(j) || S.at(min(i + 1, S.size())) == alphabet.at(j)) {
      |                                                           ~~~^~~~~~~~~~~~~~~~~
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:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:21:62: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'})
   21 |                 if (S.at(i - 1) == alphabet.at(j) || S.at(min(i + 1, S.size())) == alphabet.at(j)) {
      |                                                           ~~~^~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: 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:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:21:62: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   21 |                 if (S.at(i - 1) == alphabet.at(j) || S.at(min(i + 1, S.size())) == alphabet.at(j)) {
      |                                                           ~~~^~~~~~~~~~~~~~~~~