#include <stdio.h>

int main() {
    int a;
    while (scanf("%d", &a) != EOF) { 
        if(a>0)
        printf("%d\n",1);
        if(a==0)
        printf("%.1f\n",0.5);
        if(a<0)
        printf("%d\n",0);
    }
    return 0;
}