OJ Board

oh ! thank you !!

but i got RE .

thanks again.

who can help me find bug in my code .

thank you.

#include <iostream>
#include <cstdlib>
#include <cstring>
#include <cstdio>
#include <stack>
using namespace std;

stack<char> x;
bool judge(char *in)
{
static int i,len;

while(!x.empty()) x.pop();

len=strlen(in);
if(in[0] == ']' || in[0] == ')') return 0;
if(len % 2 != 0) return 0;
for ...

thank you.
i got AC bot PE.
that's ok.

#include <iostream>
#include <stack>
#include <string>
using namespace std;

int main()
{
int i,len;
string str;
stack<char> x;

while(getline(cin,str)){
if(cin.eof()) break;

for(i=0; i <= str.length(); ++i){
if(str[i] == ' ' || str[i] == '\0'){
while(!x.empty()){
cout << x.top() ;
x.pop ...