[백준]boj4949

코드만

 

#include <iostream>
#include <string.h>

using namespace std;

#define MAX 200

char stack[MAX];
int top;

bool isEmpty() {
	return top == 0 ? true : false;
}

bool isFull() {
	return top == MAX ? true : false;
}

void push(char data) {
	if (isFull()) return;

	stack[top++] = data;
}

char pop() {
	if (isEmpty()) return -1;

	char ret = stack[top - 1];

	stack[--top] = 0;
	
	return ret;
}

string validation(char* str) {
	int len = strlen(str);

	char c;

	top = 0;

	for (int i = 0; i < len; ++i) {

		if (str[i] == '(' || str[i] == '[') {
			push(str[i]);
		}
		else if (str[i] == ')') {
			c = pop();

			if (c != '(') return "no";
		}
		else if (str[i] == ']') {
			c = pop();

			if (c != '[') return "no";
		}


	}

	if (top != 0) return "no";
	else return "yes";
}

int main() {
	freopen("test.txt", "r", stdin);
	
	while (1) {
		char str[107];
		cin.getline(str, 107);

		if (!strcmp(str, ".")) break;

		cout << validation(str) << endl;;
	}

	return 0;
}