Compilare: main.cpp: In function 'short int back(short int)': main.cpp:57:28: warning: comparison of integer expressions of different signedness: 'short int' and 'std::vector<std::pair<short int, short int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | for(short int i=0;i<v.size();i++) | ~^~~~~~~~~ main.cpp:85:1: warning: no return statement in function returning non-void [-Wreturn-type] 85 | } | ^ main.cpp: In function 'short int rez()': main.cpp:42:1: warning: control reaches end of non-void function [-Wreturn-type] 42 | } | ^