1 #include <stdio.h> 2 #include <string.h> 3 #include <stdlib.h> 4 const int maxn = 205; 5  6 int pos; 7 int len; 8 char a[ maxn ]; 9 10 bool solveA();11 bool solveB();12 bool solveC();13 14 bool solveA(){15     //printf("A:%c\n",a[pos]);16     //if( pos>=len ) return false;17     if( a[pos]==‘(‘ ){18         pos++;19         if( solveB() ){20             if( a[pos]==‘)‘ ){21                 pos++;/*该字符后面可能还有字符*/22                 return true;23             }24             else{25                 return false;26             }27         }28         else 29             return false;30     }31     else32         if( a[pos]==‘x‘ ){33             pos++;34             return true;35         }36     else{37         pos++;/*同理，该字符后面可能还有字符*/38         return false;39     }40 }41 42 bool solveB(){43     //printf("B:%c\n",a[pos]);44     if( solveA() ){45         return solveC();46     }47     else return false;48 }49 50 51 bool solveC(){52     if( pos>=len ) return false;53     while( pos<len && a[pos]==‘+‘ ){54         pos++;55         solveA();56     }57     return true;58 }59 60 61 int main(){62     int T;63     scanf("%d",&T);64     while( T-- ){65         memset( a,‘\0‘,sizeof( a ) );66         scanf("%s",a);67         pos = 0;68         len = strlen( a );69         bool f = solveA();70         if( pos<len ) {printf("Bad\n");continue;}71         /*防止出现前半部分符合条件，后半部分不合的用例*/72         if( f ) printf("Good\n");73         else printf("Bad\n");74     }75     return 0;76 }