Compilare: main.cpp: In function 'int main()': main.cpp:22:18: 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] 22 | for(int i=0;i<a.size();i++) | ~^~~~~~~~~ main.cpp:30:18: 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] 30 | for(int i=0;i<b.size();i++) | ~^~~~~~~~~ main.cpp:42:19: 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] 42 | while(poz2<a.size() && poz1<b.size() && cnt<=k) | ~~~~^~~~~~~~~ main.cpp:42:36: 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] 42 | while(poz2<a.size() && poz1<b.size() && cnt<=k) | ~~~~^~~~~~~~~ main.cpp:62:20: 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] 62 | if(poz2==a.size()+1) | ~~~~^~~~~~~~~~~~ main.cpp:68:26: 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] 68 | if(cnt<=k && poz2>=a.size()) | ~~~~^~~~~~~~~~ main.cpp:35:9: warning: unused variable 'nr' [-Wunused-variable] 35 | int nr = 0; | ^~