Compilare: main.cpp: In function 'int main()': main.cpp:30:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:32:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &inX[i], &inY[i]); ^ main.cpp:67:13: warning: 'lasty' may be used uninitialized in this function [-Wmaybe-uninitialized] llast = lasty - 1; ~~~~~~^~~~~~~~~~~ main.cpp:50:32: warning: 'lastv' may be used uninitialized in this function [-Wmaybe-uninitialized] for (int i = 1; i <= lastv - val; ++i) { ~~~~~~^~~~~ main.cpp:58:59: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized] int cate = query(last - 1, mid - 1, last, MAXV + 1); ^