Compilare: main.cpp: In function 'void compute_z(int)': main.cpp:12:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 12 | for(int i = 1 ; i < v [line].size () ; ++ i){ | ~~^~~~~~~~~~~~~~~~~~ main.cpp:15:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | while (i + z [line][i] < v [line].size () && v [line][i + z [line][i]] == v [line][z [line][i]]) | ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int find(int, int, int)': main.cpp:24:27: 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 = start ; i < v [line].size () ; ++ i) | ~~^~~~~~~~~~~~~~~~~~