Compilare: user.cpp: In function ‘int main()’: user.cpp:97: warning: format ‘%lld’ expects type ‘long long int*’, but argument 2 has type ‘int*’ user.cpp:98: warning: comparison between signed and unsigned integer expressions user.cpp:100: warning: comparison between signed and unsigned integer expressions user.cpp:84: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:85: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:89: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:93: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:97: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result