Compilare: user.cpp: In function ‘int main()’: user.cpp:83:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v.size(); i++) ^ user.cpp:84:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i<v.size()-1 && v[i].first==v[i+1].second-1 || v[i+1].first==v[i].second-1) ^ user.cpp:84:33: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(i<v.size()-1 && v[i].first==v[i+1].second-1 || v[i+1].first==v[i].second-1) ^