Compilare: main.cpp: In function 'void build(unsigned int, unsigned int&)': main.cpp:25:23: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 25 | for (int i = 0; i < n; ++i) { | ~~^~~ main.cpp:33:18: warning: comparison of integer expressions of different signedness: 'unsigned int' and 'int' [-Wsign-compare] 33 | while (k >= t && cross(hull[k - 2], hull[k - 1], p[i]) <= 0) | ~~^~~~ main.cpp: In function 'int main()': main.cpp:47:23: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 47 | for (int i = 0; i < n; ++i) | ~~^~~ main.cpp:53:23: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 53 | for (int i = 0; i < k; ++i) | ~~^~~