Compilare: user.cpp: In function ‘void suffix_array()’: user.cpp:53: warning: array subscript has type ‘char’ user.cpp:54: warning: array subscript has type ‘char’ user.cpp: In function ‘void solve(int, int)’: user.cpp:153: warning: unused variable ‘nfp’ user.cpp: In function ‘int main()’: user.cpp:234: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:235: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:237: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:238: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:244: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:248: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result