Compilare: main.cpp: In function 'int cmlsc(std::vector<int>)': main.cpp:10:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i < a.size();i++) ~~^~~~~~~~~~ main.cpp:14:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i < a.size();i++){ ~~^~~~~~~~~~ main.cpp: In function 'int cb(int)': main.cpp:30:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(r + pas < v.size() && nr(v[r + pas].first,v[r + pas].second) <= x){ ~~~~~~~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:50:14: warning: variable 'x' set but not used [-Wunused-but-set-variable] for(auto x : v){ ^