Compilare: main.cpp: In function 'std::vector<int> sortare_top(std::vector<int>&, std::vector<std::vector<int> >&)': main.cpp:11:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<grad_i.size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:64:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<grad_i.size();i++) ~^~~~~~~~~~~~~~ main.cpp:68:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sortat.size()==n) ~~~~~~~~~~~~~^~~ main.cpp:70:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<sortat.size();i++) ~^~~~~~~~~~~~~~