Compilare: main.cpp: In member function 'void String::calc_hash()': main.cpp:163:47: warning: array subscript has type 'char' [-Wchar-subscripts] hash_ += doispe[5 - i - 1] * coresp[here[i]]; ^ main.cpp: In function 'int32_t main()': main.cpp:83:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] #define for0(i, n) for(int i = 0; i < n; ++i) main.cpp:199:7: for0(i, ord.size()) coresp[ord[i]] = i; ~~~~~~~~~~~~~ main.cpp:199:2: note: in expansion of macro 'for0' for0(i, ord.size()) coresp[ord[i]] = i; ^~~~ main.cpp:199:35: warning: array subscript has type 'char' [-Wchar-subscripts] for0(i, ord.size()) coresp[ord[i]] = i; ^ main.cpp:213:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < v.size(); ++i) ~~^~~~~~~~~~ main.cpp:189:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen(PROB_NAME".in", "r", stdin); ^ main.cpp:190:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen(PROB_NAME".out", "w", stdout); ^