Compilare: main.cpp: In function 'int main()': main.cpp:14:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<sir.size();i++) ~^~~~~~~~~~~ main.cpp:17:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<sir.size() && sir[i]==sir[inc]) ~^~~~~~~~~~~ main.cpp:22:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<elem.size();i++) ~^~~~~~~~~~~~ main.cpp:41:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<which.size();j++) ~^~~~~~~~~~~~~