Compilare: main.cpp: In function 'void Insert(Trie*, char*, int)': main.cpp:33:15: warning: NULL used in arithmetic [-Wpointer-arith] if (*w == NULL) ^~~~ main.cpp: In function 'int main()': main.cpp:106:25: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[1000002]' [-Wformat=] scanf("%s\n", &s); ^ main.cpp:101:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%s", a); ^ main.cpp:102:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &n); ^ main.cpp:106:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n", &s); ^