#include <stdio.h>

int main(void) {

    typedef struct {
        char kakko;
        int num;
    } Kakko;

    char input[] = "(())";
    int len = 4;
    int n = 4;
    int i = 0;
    int answer;

    n = n - 1; 

    Kakko array[len];

    for (int i = 0; i < len; i++) {
        array[i].kakko = input[i];
        array[i].num = i;
    }

    while (len != 0) {
        if ( array[i].kakko == ')') {
            if (array[i - 1].num == n) {
                answer = array[i].num;
            } else if (array[i].num == n) {
                answer = array[i - 1].num;
            }

            for (i; i < len - 1; i++) {
                array[i - 1] = array[i + 1];
            }
        len -= 2;
        i = 0;
        }
        i++;
    }
    answer += 1;
    printf("%d", answer);
}