Compilare: user.cpp: In function ‘void init()’: user.cpp:28:9: warning: unused variable ‘nxt’ [-Wunused-variable] int nxt; ^ user.cpp: In function ‘void read()’: user.cpp:18:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &n, &k, &s); ^ user.cpp:21:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &h[i]); ^