Compilare: main.cpp: In function 'std::vector<long long int> add(std::vector<long long int>, std::vector<long long int>)': main.cpp:33:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; (i<a.size()) || (i<b.size()) ; i++){ ~^~~~~~~~~ main.cpp:33:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; (i<a.size()) || (i<b.size()) ; i++){ ~^~~~~~~~~ main.cpp:34:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i<a.size()){ ~^~~~~~~~~ main.cpp:35:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i<b.size()){ ~^~~~~~~~~ main.cpp:42:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i<b.size()){ ~^~~~~~~~~