Compilare: main.cpp: In function 'int kmp(int, int)': main.cpp:27:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for(int i = 1; i < a.size() && ok; i ++) | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:110:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 110 | for(int i = 0; i < indexes.size(); i ++) | ~~^~~~~~~~~~~~~~~~ main.cpp:113:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 113 | for(int i = 0; i < indexes.size(); i ++) | ~~^~~~~~~~~~~~~~~~ main.cpp:119:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 119 | for(int i = 0; i < indexes.size(); i ++) | ~~^~~~~~~~~~~~~~~~ main.cpp:122:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 122 | for(int poz = 0; poz < indexes.size(); poz ++) | ~~~~^~~~~~~~~~~~~~~~ main.cpp:136:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 136 | for(int i = 0; i < indexes.size(); i ++) | ~~^~~~~~~~~~~~~~~~ main.cpp:139:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 139 | for(int poz = 0; poz < indexes.size(); poz ++) | ~~~~^~~~~~~~~~~~~~~~