Compilare: main.cpp: In function 'void Manacher(int, int)': main.cpp:68:13: warning: unused variable 'cod' [-Wunused-variable] int cod[2] = {ch, ch}, len = 0; ^~~ main.cpp:68:32: warning: unused variable 'len' [-Wunused-variable] int cod[2] = {ch, ch}, len = 0; ^~~ main.cpp: In function 'int main()': main.cpp:128:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n", a); ^