Compilare: main.cpp: In function 'long long int sortTop(int, std::vector<std::vector<long long int> >)': main.cpp:28:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for (i = 0; i < l[vf].size(); i++) | ~~^~~~~~~~~~~~~~ main.cpp:18:12: warning: unused variable 'j' [-Wunused-variable] 18 | int i, j, vf; | ^ main.cpp: In function 'int main()': main.cpp:45:30: warning: unused variable 'k' [-Wunused-variable] 45 | {long long t, m, x, y, i, j, k, mx, poz; | ^ main.cpp:45:33: warning: unused variable 'mx' [-Wunused-variable] 45 | {long long t, m, x, y, i, j, k, mx, poz; | ^~ main.cpp:45:37: warning: unused variable 'poz' [-Wunused-variable] 45 | {long long t, m, x, y, i, j, k, mx, poz; | ^~~