Compilare: main.cpp: In function 'int main()': main.cpp:45:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | for(int i=0; i < seq.size(); i++) | ~~^~~~~~~~~~~~ main.cpp:48:26: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 48 | if(nr.size() == k) | ~~~~~~~~~~^~~~ main.cpp:81:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | for(int i=0; i < v.size(); i++) | ~~^~~~~~~~~~ main.cpp:106:30: warning: 'r' may be used uninitialized in this function [-Wmaybe-uninitialized] 106 | cout<<sol<<"\n"<<l<<" "<<r; | ^ main.cpp:106:25: warning: 'l' may be used uninitialized in this function [-Wmaybe-uninitialized] 106 | cout<<sol<<"\n"<<l<<" "<<r; | ^~~