Compilare: main.cpp: In function 'int main()': main.cpp:63:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i + 1 >= n / 3 && sA.size() >= n / 3) ~~~~~~~~~~^~~~~~~~ main.cpp: In instantiation of 'void printSol(double, double, auto:1, auto:2, int, int) [with auto:1 = std::_Rb_tree_const_iterator<Point>; auto:2 = std::_Rb_tree_const_iterator<Point>]': main.cpp:76:60: required from here main.cpp:38:34: warning: format '%d' expects argument of type 'int', but argument 3 has type 'int*' [-Wformat=] if (!vis[v[i].id]) printf("%d %d ", v[i].x, &v[i].y); ^ main.cpp:54:73: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d %d %d%d", &A.x, &A.y, &B.x, &B.y, &C.x, &C.y, &n); ^ main.cpp:56:40: 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); ^ main.cpp:70:16: warning: 'Gy' may be used uninitialized in this function [-Wmaybe-uninitialized] Gy -= C.y; ~~~^~~~~~ main.cpp:69:16: warning: 'Gx' may be used uninitialized in this function [-Wmaybe-uninitialized] Gx -= C.x; ~~~^~~~~~