摘要： 先标记，然后分情况判断，最后一定要多做测试。略显麻烦。/* 1031: Parsing Real Numbers */# include <stdio.h># include <ctype.h># include <string.h># define BITSET(i) ((sign)|=(char)(0x1<<(i)))# define GETBIT(i) ((sign)>>(i) & (0x1))char a[1000];char sign;/* sign: 0 - wrong? 1 - coeff sign 2 - in 阅读全文

摘要： 位标记，MLE了/* csu 1069 changelong MLE */# include <stdio.h># define MAX 10000000# define INDEX(x) ((x)>>(3))# define OFFSET(x) ((x)%(8))# define GET_BIT(x) (vis[INDEX(x)]>>OFFSET(x) & 0x1)# define SET_BIT(x) (vis[INDEX(x)] |= (char)((0x1)<<OFFSET(x)))char vis[INDEX(MAX)+1]; 阅读全文