Compilare: user.cpp: In constructor ‘huffman::huffman()’: user.cpp:13:12: warning: overflow in implicit constant conversion [-Woverflow] val=1000000000000000010; ^ user.cpp: In function ‘int main()’: user.cpp:46:20: warning: format ‘%lld’ expects argument of type ‘long long int*’, but argument 2 has type ‘long int*’ [-Wformat=] scanf("%lld",&n); ^ user.cpp:49:24: warning: format ‘%lld’ expects argument of type ‘long long int*’, but argument 2 has type ‘long int*’ [-Wformat=] scanf("%lld",&q); ^ user.cpp:88:24: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 2 has type ‘long int’ [-Wformat=] printf("%lld\n",sol); ^ user.cpp:92:50: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 2 has type ‘long int’ [-Wformat=] printf("%lld %lld\n",it->first,it->second); ^ user.cpp:92:50: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 3 has type ‘long int’ [-Wformat=] user.cpp:44:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("huffman.in","r",stdin); ^ user.cpp:45:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("huffman.out","w",stdout); ^ user.cpp:46:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&n); ^ user.cpp:49:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&q); ^