Compilare: main.cpp: In function 'int querry(int)': main.cpp:33:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for(i=0; i<vec.size(); i++) | ~^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:62:11: warning: unused variable 'k' [-Wunused-variable] 62 | int n,k,l,maxim=0,i,j; | ^ main.cpp:62:13: warning: unused variable 'l' [-Wunused-variable] 62 | int n,k,l,maxim=0,i,j; | ^