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22 lines
484 B
22 lines
484 B
2 years ago
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#include <bits/stdc++.h>
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using namespace std;
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const int N = 10;
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int a[N];
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int main() {
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int n;
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cin >> n;
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int cnt = 0;
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while (true) {
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cnt++;
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a[1] = n / 100;
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a[2] = n % 100 / 10;
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a[3] = n % 10;
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sort(a + 1, a + 1 + 3);
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int mx = a[3] * 100 + a[2] * 10 + a[1];
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int mi = a[1] * 100 + a[2] * 10 + a[3];
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n = mx - mi;
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if (n == 495) break;
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}
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cout << cnt << endl;
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return 0;
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}
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