Eroare de compilare: user.cpp:43:15: error: stray ‘#’ in program L = s;#include <cstdio> ^ user.cpp: In function ‘void convex_hull()’: user.cpp:43:16: error: ‘include’ was not declared in this scope L = s;#include <cstdio> ^ user.cpp:43:25: error: ‘cstdio’ was not declared in this scope L = s;#include <cstdio> ^ user.cpp:50:1: error: expected primary-expression before ‘using’ using namespace std; ^ user.cpp:50:1: error: expected ‘;’ before ‘using’ user.cpp:60:76: error: a function-definition is not allowed here before ‘{’ token inline bool cross_product (const point &a, const point &b, const point &c) { ^ user.cpp:66:67: error: a function-definition is not allowed here before ‘{’ token inline long long square_distance (const point &a, const point &b) { ^ user.cpp:72:21: error: a function-definition is not allowed here before ‘{’ token void convex_hull () { ^ user.cpp:212:1: error: expected ‘}’ at end of input } ^ user.cpp:53:17: warning: unused variable ‘INFI’ [-Wunused-variable] const long long INFI = 2e18; ^ user.cpp:57:7: warning: unused variable ‘P’ [-Wunused-variable] point P[NMAX]; ^ user.cpp:58:5: warning: unused variable ‘stk’ [-Wunused-variable] int stk[NMAX], head, L; ^ user.cpp:58:16: warning: unused variable ‘head’ [-Wunused-variable] int stk[NMAX], head, L; ^ user.cpp:58:22: warning: unused variable ‘L’ [-Wunused-variable] int stk[NMAX], head, L; ^ user.cpp:33:15: warning: unused variable ‘start_point’ [-Wunused-variable] int i, s, start_point = 1, id = 1, k = 1; ^ user.cpp:33:32: warning: unused variable ‘id’ [-Wunused-variable] int i, s, start_point = 1, id = 1, k = 1; ^ user.cpp:36:10: warning: unused variable ‘trig’ [-Wunused-variable] bool trig = 1; ^