#include<stdio.h>
 
void print_base2(unsigned val){
    if(val != 0)print_base2(val >> 1);
    else return;
    putchar(val&1 ? '1' : '0');
}
 
int main(void){
    unsigned val;
    fputs("符号なし10進数：",stdout);
    scanf("%u",&val);
    
    print_base2(val);
    putchar('\n');
    return 0;
}