#include <stdio.h>
#include <string.h>

int stack[100];
int top = -1;

void push(int x){
    stack[++top] = x;
}

int pop(){
    return stack[top--];
}

int main(){
    char list[] = "()[{}]()";

    for (int i = 0;i < strlen(list); i++){
        if (list[i] == '(' || list[i] == '[' || list[i] == '{'){
            push(list[i]);
        }
        else if (list[i] == ')' || list[i] == ']' || list[i] == '}'){
            if (top == -1) {
                printf("오류");
            }
            pop();   
        }
    }
    printf("정상");
    return 0;
}