Compilare: main.cpp: In function 'void readInputAndCompress()': main.cpp:12:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < ins.size(); ++i) { ~~^~~~~~~~~~~~ main.cpp: In function 'bool termen()': main.cpp:60:29: warning: array subscript has type 'char' [-Wchar-subscripts] rez = val[s[pos]]; ^ main.cpp: In function 'int main()': main.cpp:74:15: warning: array subscript has type 'char' [-Wchar-subscripts] val[el] = !val[el]; ^ main.cpp:74:26: warning: array subscript has type 'char' [-Wchar-subscripts] val[el] = !val[el]; ^