Compilare: user.cpp: In function ‘void work(long long int)’: user.cpp:29: warning: suggest parentheses around comparison in operand of ‘&’ user.cpp: In function ‘int main()’: user.cpp:62: warning: format ‘%lld’ expects type ‘long long int*’, but argument 2 has type ‘int*’ user.cpp:62: warning: format ‘%lld’ expects type ‘long long int*’, but argument 3 has type ‘int*’ user.cpp:60: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:61: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:62: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:66: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result