Compilare: main.cpp: In function 'int main()': main.cpp:89:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 89 | for(int j=0;j<s.size();j++) | ~^~~~~~~~~ main.cpp:102:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 102 | for(int j=s.size()-u;j<s.size();j++) | ~^~~~~~~~~ main.cpp:115:68: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<hsh, hsh> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 115 | for(int j=lower_bound(v.begin(),v.end(),cv)-v.begin();j<v.size();j++) | ~^~~~~~~~~