
#include <bits/stdc++.h>
using namespace std;
 
int binary(int n) {
    int i=0;
    int k=0;
    while (n!=0) {
        k=k+(n%2)*pow(10,i);
        n=n/2;
        i++;
    }
    return k;
}
int main() {
    int n;
    cout<<"十进制:";
    cin>>n;
    cout<<"二进制:"<<binary(n)<<endl;
    return 0;
}



