#include <stdio.h>
#include <string.h>
char num[333335];
int two[1000000];
int main() {
scanf("%s",num);
if (!strcmp(num,"0")) {
printf("0");
return 0;
}
int len=strlen(num);
for(int i=0; i<len; i++) {
int n=num[i]-'0';
for(int cnt=2; cnt>=0; cnt--) {
two[3*i+cnt]=n%2;
n/=2;
}
}
int flag=0;
int l=strlen(num)*3;
for(int i=0; i<l; i++) {
if(two[i]==1) flag = 1;
if(flag == 1) {
printf("%d",two[i]);
}
}
return 0;
}
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