1 #define OP_ADD 257 2 #define OP_SUB 259 3 #define OP_MUL 261 4 #define OP_DIV 263 5 #define OP_MOD 265 6 #define OP_AND 267 7 #define DIGIT 269 8 #define LETTER 270 9 #define UMINUS 271 10