29 lines
495 B
C++
29 lines
495 B
C++
// Removing Digits
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#include<bits/stdc++.h>
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using namespace std;
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int dp[(int)1e6 + 1];
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int solve(int n) {
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if (dp[n]) return dp[n];
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int count = INT_MAX;
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if (n == 0) return 0;
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for (int i = 1; i <= 10 * n; i*= 10) {
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int remove = (n / i) - (n / (10 * i)) * 10;
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if (!remove) continue;
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count = min(count, 1 + solve(n - remove));
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}
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dp[n] = count;
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return count;
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}
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int main() {
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int n; cin >> n;
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cout << solve(n) << endl;
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return 0;
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}
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