Compilare: main.cpp: In function 'void query(Trie*, char*)': main.cpp:64:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < strlen(s) - 1; i++) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:78:21: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[1000002]' [-Wformat=] scanf("%s\n", &s); ^ main.cpp:72:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rps.in", "r", stdin); ^ main.cpp:73:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rps.out", "w", stdout); ^ main.cpp:75:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d\n", &n, &k, &w, &d); ^ main.cpp:78:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n", &s); ^