Compilare: main.cpp: In function 'bool CheckMid(int, int, int, Point, int, int)': main.cpp:62:9: warning: variable 'l' set but not used [-Wunused-but-set-variable] int l, r, it1; ^ main.cpp: In function 'void brut()': main.cpp:56:53: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d", &A.x, &A.y, &B.x, &B.y); ^ main.cpp: In function 'void optim()': main.cpp:148:53: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d", &A.x, &A.y, &B.x, &B.y); ^ main.cpp: In function 'int main()': main.cpp:156:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &N, &M); ^ main.cpp:160:41: 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); ^