#include <stdio.h>

void solve(int x) {
    if (x == 0) return ;
    solve(x / 2);
    printf("%d", x % 2);
}
int main() {
    int x;
    while (scanf("%d", &x) == 1) {
        solve(x);
        printf("\n");
    }
    
    return 0;
}