Compilare: main.cpp: In function 'int main()': main.cpp:46:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 46 | for(i=0;i<v.size();++i){ | ~^~~~~~~~~ main.cpp:56:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | if(maxi>0 && maxi<v.size()-2 && v.size()){ | ~~~~^~~~~~~~~~~ main.cpp:17:13: warning: unused variable 'poz' [-Wunused-variable] 17 | int c,n,poz,maxpoz,x,lx=0,cnt=0; | ^~~ main.cpp:17:17: warning: unused variable 'maxpoz' [-Wunused-variable] 17 | int c,n,poz,maxpoz,x,lx=0,cnt=0; | ^~~~~~