Compilare: main.cpp: In function 'void precalc(std::string)': main.cpp:13:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 13 | for(int i=1;i<s.size();i++) | ~^~~~~~~~~ main.cpp:16:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | while(s[k]==s[i+k] && i+k<s.size()) | ~~~^~~~~~~~~ main.cpp: In function 'void afis()': main.cpp:24:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int i=0;i<s2.size();i++) | ~^~~~~~~~~~ main.cpp:27:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | while(s1[k]==s2[i+k] && k<s1.size() && i+k<=s2.size()) | ~^~~~~~~~~~ main.cpp:27:51: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | while(s1[k]==s2[i+k] && k<s1.size() && i+k<=s2.size()) | ~~~^~~~~~~~~~~ main.cpp:29:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | if(k==s1.size()) | ~^~~~~~~~~~~