Compilare: main.cpp: In function 'long long int HullDif(int, int)': main.cpp:61:8: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if (sol[0][1] == 'V') ^ main.cpp: In function 'int main()': main.cpp:83:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:86:40: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &V[i].x, &V[i].y); ^