Compilare: main.cpp: In function 'int main()': main.cpp:20:15: warning: left shift count >= width of type [-Wshift-count-overflow] 20 | mp[(h1<<32)^h2]=1; | ~~^~~~ main.cpp:33:21: warning: left shift count >= width of type [-Wshift-count-overflow] 33 | if (mp.count((h1<<32)^h2)) ++r; | ~~^~~~ main.cpp:34:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for (int i=l; i<s.size(); ++i) { | ~^~~~~~~~~ main.cpp:41:25: warning: left shift count >= width of type [-Wshift-count-overflow] 41 | if (mp.count((h1<<32)^h2)) ++r; | ~~^~~~