#include <iostream>#include <fstream>#include <stdlib.h>using namespace std;
int main(){int x,n1=0,n2=0,p1=1,p2=1; ifstream f("bac.in");f>>x;while(x!=0){int c=x%10;if(c%2==0){n1=n1+p1*c;p1=p1*10;}else if(c%2==1){n2=n2+p2*c;p2=p2*10;}x=x/10;}int d; d=abs(n1-n2); cout<<d;
}