Compilare: main.cpp: In function 'bool check(int)': main.cpp:29:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | while (i < aux.size()) { | ~~^~~~~~~~~~~~ main.cpp:33:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | if (i >= 2 * x - 1 + x + 1 && i < aux.size() - x && kmp2[i] == x) | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:60:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | while (i < s.size()) { | ~~^~~~~~~~~~ main.cpp:80:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 80 | if (x <= s.size() / 2) | ~~^~~~~~~~~~~~~~~ main.cpp:56:11: warning: unused variable 't1' [-Wunused-variable] 56 | clock_t t1 = clock(); | ^~