Compilare: main.cpp: In function 'int main()': main.cpp:45:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | for(int i=0;i<s.size();i++) | ~^~~~~~~~~ main.cpp:50:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | if(i+2<s.size()) | ~~~^~~~~~~~~ main.cpp:61:29: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for(int j=i+ci;j<s.size() && j-i+1<7;j++) | ~^~~~~~~~~ main.cpp:48:18: warning: variable 'ok' set but not used [-Wunused-but-set-variable] 48 | bool ok=false; | ^~