Compilare: main.cpp: In function 'void afmin()': main.cpp:13:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=q.size();i++) ~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:30:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(q.size()>k) ~~~~~~~~^~ main.cpp:41:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(q.size()==k) ~~~~~~~~^~~