Compilare: main.cpp: In function 'void tokenize()': main.cpp:69:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 69 | for(int i=0;i<toks.size() ; ++ i){ | ~^~~~~~~~~~~~ main.cpp: In function 'void solve_for()': main.cpp:83:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | for(int i=0;i<toks.size();++i){ | ~^~~~~~~~~~~~ main.cpp:90:36: warning: array subscript has type 'char' [-Wchar-subscripts] 90 | int v = valz[toks[i][0]]; | ^ main.cpp:84:13: warning: unused variable 'xxor' [-Wunused-variable] 84 | int xxor=0; | ^~~~ main.cpp:156:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 156 | for(int i=0;i<yard.size();++i){ | ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:184:14: warning: array subscript has type 'char' [-Wchar-subscripts] 184 | valz[ch] ^= 1; | ^~