Compilare: user.cpp: In function ‘void manacher()’: user.cpp:42:13: warning: unused variable ‘j’ [-Wunused-variable] int j = c + (c - i); ^ user.cpp:36:9: warning: unused variable ‘dr’ [-Wunused-variable] int dr = 0; ^ user.cpp: In function ‘void citire()’: user.cpp:16:29: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(tmp, N + 1, stdin); ^ user.cpp: In function ‘int main()’: user.cpp:76:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pscpld.in", "r", stdin); ^ user.cpp:77:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pscpld.out", "w", stdout); ^