Compilare: user.cpp: In function ‘int main()’: user.cpp:59:24: warning: format ‘%ld’ expects argument of type ‘long int’, but argument 2 has type ‘unsigned int’ [-Wformat=] printf("%ld\n", sol); ^ user.cpp:28:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("abc2.in","r",stdin); ^ user.cpp:29:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("abc2.out","w",stdout); ^ user.cpp:31:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", s); ^ user.cpp:36:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", word); ^ user.cpp:56:62: warning: ‘len’ may be used uninitialized in this function [-Wmaybe-uninitialized] hash = (hash - offset * (s[i - len] - 'a')) * 3 + s[i] - 'a'; ^