#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <math.h>
#define STACK_INIT_SIZE 20
#define STACKINCREMENT 10
#define MAXBUFFER 10
typedef char ElemType;
typedef struct
{
ElemType *base;
ElemType *top;
int stacksize;
}SqStack;
void InitStack(SqStack *S)
{
S->base=(ElemType*)malloc(STACK_INIT_SIZE*sizeof(ElemType));
if (!S->base)exit(OVERFLOW);
S->top=S->base;
S->stacksize=STACK_INIT_SIZE;
return;
}
void Push(SqStack *S, ElemType e)
{
if(S->top-S->base>=S->stacksize)
{
S->base=(ElemType*)realloc(S->base,(S->stacksize+STACKINCREMENT)*sizeof (ElemType));
if(!S->base)
exit(OVERFLOW);
S->top=S->base+S->stacksize;
S->stacksize+=STACKINCREMENT;
}
*S->top++=e;
return;
}
void Pop(SqStack *S, ElemType *e)
{
if (S->top==S->base)
{
return;
};
e=--S->top;
}
int StackLen(SqStack S)
{
return(S.top-S.base);
}
int main()
{
SqStack S;
char c,e;
InitStack(&S);
scanf("%c",&c);//读入c
while(c!='.')
{
switch(c)
{
case '(':
case '[':
case '{':
Push(&S,c);//如果是开始符,则入栈
scanf("%c",&c);//读入下一个符号
if ('.'==c)
{Pop(&S,&e);printf("NO\n");printf("%c-?",e);}//当开始符后面的符号直接是'.'的话,直接输出
else break;//包含第一个字符是开始符的情况
case '/':
Push(&S,c);
scanf("%c",&c);
Push(&S,c);
do
{
scanf("%c",&c);
}while (c!='*'&&c!='.');
if ('*'==c)
{
Push(&S,c);
scanf("%c",&c);
Push(&S,c);
scanf("%c",&c);
break;
}
else {printf("NO\n");printf("/*-?");}
break;
case '*':
printf ("NO\n");
printf("?-*/");
c='.';
break;
case ')':
if (!StackLen(S)){printf("NO\n");printf ("?-%c", c);}
else
{
Pop(&S,&e);
if ('('!=e){printf("NO\n");printf("?-)");}
else if('('==e)scanf("%c",&c);
}break;
case ']':
if (!StackLen(S)){printf("NO");printf("\n?-]");}
else
{
Pop(&S,&e);
if ('['!=e){printf("NO\n");printf("?-]");}
else if('['==e)scanf("%c",&c);
}break;
case '}':
if (!StackLen(S))printf("NO\n?-}");
else
{
Pop(&S,&e);
if ('{'!=e){printf("NO\n");printf("?-}");}
else if('{'==e)scanf("%c",&c);
}break;
}
}
if (!StackLen(S))printf ("\nYES");
return 0;
}
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