Compilare: main.cpp: In function 'void add_componenta(std::vector<std::pair<int, int> >&, std::vector<std::pair<int, int> >&)': main.cpp:27:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | while(i1 < p.size() && i2 < n.size()){ | ~~~^~~~~~~~~~ main.cpp:27:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | while(i1 < p.size() && i2 < n.size()){ | ~~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:92:9: warning: unused variable 'sum' [-Wunused-variable] 92 | int sum = 0; | ^~~