1 #include <string.h>
2 #include <stdio.h>
3 #include <stdlib.h>
4 char str[100];
5 int c,num;
6 void E();
7 void G();
8 void T();
9 void S();
10 void F();
11 int main()
12 {
13 scanf("%s",str);
14 E();
15 if(str[c]=='#')
16 printf("accept\n");
17 else
18 printf("error\n");
19 return 0;
20 }
21 void E()
22 {
23 if(str[c]=='('||str[c]=='i')
24 {
25 printf("%d E-->TG\n",num);
26 num++;
27 T();
28 G();
29 }
30 else
31 {
32 printf("error\n");
33 exit(0);
34 }
35 }
36
37 void G()
38 {
39 if(str[c]=='+')
40 {
41 c++;
42 printf("%d G-->+TG\n",num);
43 num++;
44 T();
45 G();
46 }
47 else
48 {
49 printf("%d G-->&\n",num);
50 num++;
51 }
52 }
53
54 void T()
55 {
56 if(str[c]=='('||str[c]=='i')
57 {
58 printf("%d T-->FS\n",num);
59 num++;
60 F();
61 S();
62 }
63 else
64 {
65 printf("error\n");
66 exit(0);
67 }
68 }
69 void S()
70 {
71 if(str[c]=='*')
72 {
73 c++;
74 printf("%d S-->*FS\n",num);
75 num++;
76 F();
77 S();
78 }
79 else
80 {
81 printf("%d S-->&\n",num);
82 num++;
83 }
84 }
85 void F()
86 {
87 if(str[c]=='(')
88 {
89 c++;
90 printf("%d F-->(E)\n",num);
91 num++;
92 E();
93 if(str[c]==')')
94 {
95 c++;
96 }
97 else
98 {
99 printf("error\n");
100 exit(0);
101 }
102 }
103 else if (str[c]=='i')
104 {
105 c++;
106 printf("%d F-->i\n",num);
107 num++;
108 }
109 else
110 {
111 printf("error\n");
112 exit(0);
113 }
114 }
