Compilare: main.cpp: In member function 'mata mata::operator+(const mata&) const': main.cpp:22:60: warning: narrowing conversion of '((((((long long int)((int)((const mata*)this)->mata::v)) * abcdefhg[((int)x.mata::l)]) % ((long long int)mod)) + ((long long int)((int)x.mata::v))) % ((long long int)mod))' from 'long long int' to 'int' [-Wnarrowing] 22 | return hash{((ll)v * (ll)pow[x.l] % (ll)mod + (ll)x.v) % mod, | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~ main.cpp: In member function 'mata mata::operator-(const mata&) const': main.cpp:27:66: warning: narrowing conversion of '(((((long long int)((int)((const mata*)this)->mata::v)) - ((((long long int)((int)x.mata::v)) * abcdefhg[(((int)((const mata*)this)->mata::l) - ((int)x.mata::l))]) % ((long long int)mod))) + ((long long int)mod)) % ((long long int)mod))' from 'long long int' to 'int' [-Wnarrowing] 27 | return hash{((ll)v - (ll)x.v * pow[l - x.l] % mod + (ll)mod) % mod, | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~