Compilare: user.cpp: In function ‘void reset(T*)’: user.cpp:21:98: warning: array subscript has type ‘char’ [-Wchar-subscripts] nod->hsh.first = pwr[nod->dr->siz+1] * nod->st->hsh.first + pwr[nod->dr->siz] * alf1[nod->val] + nod->dr->hsh.first; ^ user.cpp:22:100: warning: array subscript has type ‘char’ [-Wchar-subscripts] nod->hsh.second = pwr[nod->dr->siz+1] * nod->st->hsh.second + pwr[nod->dr->siz] * alf2[nod->val] + nod->dr->hsh.second; } ^ user.cpp: In function ‘T* insert(T*, int, char)’: user.cpp:67:68: warning: array subscript has type ‘char’ [-Wchar-subscripts] return join3(tmp.first, new T {ch, 1, rand(), make_pair(alf1[ch], alf2[ch]), &nil, &nil}, tmp.second); } ^ user.cpp:67:78: warning: array subscript has type ‘char’ [-Wchar-subscripts] return join3(tmp.first, new T {ch, 1, rand(), make_pair(alf1[ch], alf2[ch]), &nil, &nil}, tmp.second); } ^ user.cpp: In function ‘std::pair<T*, T*> split(T*, int)’: user.cpp:42:46: warning: control reaches end of non-void function [-Wreturn-type] return make_pair(nod, tmp.second); } } ^ user.cpp: In function ‘int main()’: user.cpp:76:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("diez.in", "r", stdin); ^ user.cpp:77:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("diez.out", "w", stdout); ^ user.cpp:97:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d %s", &n, &m, str); ^ user.cpp:102:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &op); ^ user.cpp:105:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %c", &pos, &ch); ^ user.cpp:109:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &x, &y, &l); ^