Compilare: main.cpp: In function 'std::vector<int> operator+(std::vector<int>, std::vector<int>)': main.cpp:17:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<=max(a.size(),b.size())+10;i++) ~^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:20:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i<a.size())c[i]+=a[i]; ~^~~~~~~~~ main.cpp:21:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i<b.size())c[i]+=b[i]; ~^~~~~~~~~