Compilare: user.cpp: In function ‘void Solve(int)’: user.cpp:25:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( pos_dr[i][ s[i] ] ) { ultim[0][i] = pos_dr[i][ s[i] ]; ok = 1; t = 1; } ^ user.cpp:25:65: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( pos_dr[i][ s[i] ] ) { ultim[0][i] = pos_dr[i][ s[i] ]; ok = 1; t = 1; } ^ user.cpp: In function ‘int main()’: user.cpp:59:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] ap[ s[i] ] = i; ^ user.cpp:66:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] ap[ s[i] ] = i; ^ user.cpp:46:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("palm.in","r",stdin); ^ user.cpp:47:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("palm.out","w",stdout); ^ user.cpp:52:30: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets( s+1, NMax, stdin ); ^