Compilare: main.cpp: In function 'long long int f(int)': main.cpp:22:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | aux.push_back(p[i][j+1]-p[i][j]); | ~^~~~~~~~~~~~~~ main.cpp:25:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | { | ^ main.cpp:27:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | { | ^