Compilare: main.cpp: In function 'void setRot(int, int)': main.cpp:38:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pos >= stk.size()) return; ~~~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:77:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (pos < stk.size()) { ~~~~^~~~~~~~~~~~