Compilare: main.cpp: In function 'int main()': main.cpp:57:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<vec_comp.size(); i++) ~^~~~~~~~~~~~~~~~ main.cpp:67:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<vec_comp.size(); i++) ~^~~~~~~~~~~~~~~~ main.cpp:86:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<v2.size()-1; i++) ~^~~~~~~~~~~~ main.cpp:92:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<v2.size() && k<v1.size(); i++) ~^~~~~~~~~~ main.cpp:92:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<v2.size() && k<v1.size(); i++) ~^~~~~~~~~~ main.cpp:99:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==v2.size()-1) ~^~~~~~~~~~~~~ main.cpp:108:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=v2[i].size()-1;j++) ~^~~~~~~~~~~~~~~~ main.cpp:120:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<v1.size()-1; i++) ~^~~~~~~~~~~~