#44329: c++整解
yp11251144@yphs.tp.edu.tw
(911-38曾湛)
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiinclude <bits/stdc++.h>
using namespace std;
int main()
{
int n,a[50],c;
while(cin>>n){
c=0;
while(n>0){
a[c]=n%2;
c++;
n/=2;
}
for(int i=c-1; i>=0; i--) cout<<a[i];
cout<<endl;
}
}