Compilare: main.cpp: In function 'void rez()': 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<zet.size();i++) | ~^~~~~~~~~~~ main.cpp:21:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | while(i+z[i]<zet.size() && zet[i+z[i]]==zet[z[i]]) | ~~~~~~^~~~~~~~~~~ main.cpp:30:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | for(int i=0;i<zet.size();i++) | ~^~~~~~~~~~~ main.cpp:31:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | if(z[i]==s.size()) | ~~~~^~~~~~~~~~ main.cpp:34:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for(int i=0;i<k.size();i++) | ~^~~~~~~~~ main.cpp:16:9: warning: variable 'st' set but not used [-Wunused-but-set-variable] 16 | int st=0,dr=0; | ^~