Compilare: main.cpp: In function 'int main()': main.cpp:11:18: 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<a.size();i++) | ~^~~~~~~~~ main.cpp:17:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | for(int i=1;i<s.size();i++) | ~^~~~~~~~~ main.cpp:22:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | while(i+manacher[i]+1<s.size() && i-manacher[i]-1>=1 && s[i+manacher[i]+1]==s[i-manacher[i]-1]) | ~~~~~~~~~~~~~~~^~~~~~~~~ main.cpp:34:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | while(i+manacher[i]+1<s.size() && i-manacher[i]-1>=1 && s[i+manacher[i]+1]==s[i-manacher[i]-1]) | ~~~~~~~~~~~~~~~^~~~~~~~~ main.cpp:42:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | for(int i=1;i<s.size();i++) | ~^~~~~~~~~