Compilare: user.cpp: In function ‘int main()’: user.cpp:44:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:47:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &p[i].val); ^ user.cpp: In function ‘long long int mthElem()’: user.cpp:40:12: warning: ‘ret’ may be used uninitialized in this function [-Wmaybe-uninitialized] return ret; ^