#include <stdio.h>

int rek(int x) {
    int brojac = 0;
    
    while(x > 0) {
        x /= 10;
        brojac++;
    }
    if(brojac % 2 == 0) {
        return 1;
    }
    else {
        return 0;
    }
}
int main () {

    int n;
    scanf("%d", &n);
    
    printf("%d\n", rek(n));

return 0;

}