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:51:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1;i < v.size();i++){ ~~^~~~~~~~~~ main.cpp:61:13: warning: unused variable 'st' [-Wunused-variable] int st = cb(nr(x1,y1 - 1)) + 1; ^~ main.cpp:62:13: warning: unused variable 'dr' [-Wunused-variable] int dr = cb(nr(x2,y2)); ^~