Compilare: user.cpp: In function ‘int main()’: user.cpp:69:26: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (i0 >= N || i1 < qe && others[i1].cost < v[i0].cost) { ^ user.cpp:54:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N); ^ user.cpp:56:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld", &v[i].cost); ^