Compilare: main.cpp: In function 'int main()': main.cpp:26:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for(int i = 0 ; i < s.size() ; i++) | ~~^~~~~~~~~~ main.cpp:31:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | for(int i = 0 ; i < v.size() ; i++) | ~~^~~~~~~~~~ main.cpp:37:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | while(i + k < v.size() && i - k >= 0 && v[i + k] == v[i - k]) | ~~~~~~^~~~~~~~~~ main.cpp:47:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for(int i = 0; i < v.size(); i++) | ~~^~~~~~~~~~