#include <stdio.h>
#include <stdbool.h>
#define INCIRCLE false
#define OUTCIRCLE true

void del(int *p, int m) {
    int nowPos = 0, count = 0, outCount = 0;
    for (outCount = 0; outCount < m - 1; outCount++) {
        count = 0;
        while (count < 3) {
            if ( *(p + nowPos) == INCIRCLE) {
                count++;
            }
            nowPos = (nowPos + 1) % m;
        }
        *(p + ((nowPos + m - 1) % m)) = OUTCIRCLE;
    }
    for (;;nowPos = (nowPos + 1) % m) {
        if (*(p+nowPos) == INCIRCLE) {
            printf("%d\n", nowPos + 1);
            break;
        }
    }
}

int main() {
    int num[50] = {0};
    int n = 0;
    scanf("%d", &n);
    del(num, n);
    return 0;
}