Compilare: main.cpp: In function 'int main()': main.cpp:25:26: warning: array subscript has type 'char' [-Wchar-subscripts] cst[i][j] = aux[str[j]]; ^ main.cpp:28:18: warning: array subscript has type 'char' [-Wchar-subscripts] dp[x1][y1][aux[c]] = 0; ^ main.cpp:28:19: warning: array subscript has type 'char' [-Wchar-subscripts] dp[x1][y1][aux[c]] = 0; ^ main.cpp:29:36: warning: array subscript has type 'char' [-Wchar-subscripts] que[0].push_back(Str(x1, y1, aux[c])); ^ main.cpp:17:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("semafoare.in", "r", stdin); ^ main.cpp:18:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("semafoare.out", "w", stdout); ^