Compilare: user.cpp: In function ‘void bf(int)’: user.cpp:26: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:61: warning: comparison between signed and unsigned integer expressions user.cpp:63: warning: format ‘%lld’ expects type ‘long long int’, but argument 2 has type ‘long unsigned int’ user.cpp:65: warning: format ‘%lld’ expects type ‘long long int’, but argument 2 has type ‘long unsigned int’ user.cpp:65: warning: format ‘%lld’ expects type ‘long long int’, but argument 3 has type ‘long unsigned int’ user.cpp:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:47: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:53: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result