Compilare: main.cpp: In function 'int main()': main.cpp:109:54: warning: array subscript has type 'char' [-Wchar-subscripts] ui c = cost[curentIdx] + mul[v[curentIdx]][v[newIdx]]; ^ main.cpp:109:65: warning: array subscript has type 'char' [-Wchar-subscripts] ui c = cost[curentIdx] + mul[v[curentIdx]][v[newIdx]]; ^ main.cpp:62:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("taxa.in", "r", stdin); ^ main.cpp:63:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("taxa.out", "w", stdout); ^ main.cpp:65:33: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buf, 1, MAXBUF, stdin); ^ main.cpp: In function 'int getInt()': main.cpp:36:41: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buf, 1, MAXBUF, stdin); ^ main.cpp:43:41: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buf, 1, MAXBUF, stdin); ^