#include #include #include using namespace std;

int n,a[6],b[6];

bool cmp(int x,int y) { return x > y; }

int main() { cin >> n; while(n != 6174) { memset(a,0,sizeof(a)); memset(b,0,sizeof(b)); int num = n,sum = 0; n = 0; for(int i = 1;num != 0;i++) { a[i] = num%10; b[i] = num%10; num /= 10; } sort(a+1,a+5,cmp); sort(b+1,b+5); for (int i = 1;i <= 4;i++) { n = n10+a[i]; sum = sum10+b[i]; } cout << n << "-" << sum << "=" << n-sum << endl; n = n-sum; } return 0; }