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2 years ago
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#include <iostream>
using namespace std;

int d(int a)
{
    for (int i=0; a > 0; i++)
    {
        if (a > 0)a /= 10;
        else if (a == 0)return i;
    }
}

int main()
{
    int a;
    cin >> a;
    cout << d(a);
}
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