Compilare: user.cpp: In function ‘int main()’: user.cpp:74:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<IN.size()-1;i++) ~^~~~~~~~~~~~ user.cpp:76:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=IN.size()-1;i<OUT.size();i++) ~^~~~~~~~~~~ user.cpp:81:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<OUT.size();i++) ~^~~~~~~~~~~ user.cpp:83:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=OUT.size()+1;i<IN.size();i++) ~^~~~~~~~~~