karte.cpp: In function 'int main()':
karte.cpp:11:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
11 | for (int i = 0; i < s.size(); i += 3) {
| ~~^~~~~~~~~~
karte.cpp:16:19: warning: comparison of integer expressions of different signedness: 'std::set<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
16 | if (st.size() == cnt) {
| ~~~~~~~~~~^~~~~~
karte.cpp:18:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
18 | for (int i = 0; i < s.size(); i += 3) {
| ~~^~~~~~~~~~