#include <stdio.h>

void calcNext(int lastResult) {
    if (lastResult == 6174)
    {
        return;
    }
}

int main() {
    int digits[10] = {0};
    int maxComb, minComb;
    int nowChecking;
    int curDigit = 0;
    int i = 0, j = 0;
    scanf("%d", &nowChecking);
    while (nowChecking > 0) {
        curDigit = nowChecking % 10;
        if (digits[curDigit] > 0) {
            printf("error");
            return 0;
        }
        else {
            digits[curDigit] = 1;
            nowChecking /= 10;
        }
    }
    while (nowChecking != 6174) {
        maxComb = 0;
        minComb = 0;
        for (i = 0; i < 10; i++) {
            for (j = 0; j < digits[i]; j++) {
                minComb = minComb * 10 + i;
            }
        }
        for (i = 9; i >= 0; i--) {
            for (j = 0; j < digits[i]; j++) {
                maxComb = maxComb * 10 + i;
            }
        }
        nowChecking = maxComb - minComb;
        printf("%d - %d = %d\n", maxComb, minComb, nowChecking);
        for (i = 0; i < 10; i++) {
            digits[i] = 0;
        }
        while (nowChecking > 0) {
            digits[nowChecking % 10]++;
            nowChecking /= 10;
        }
        nowChecking = maxComb - minComb;
    }
    return 0;
}