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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int n;
  6. 	cin>>n;
  7. 	cout<<(int)log10(n)<<endl;
  8. 	return 0;
  9. }
Success #stdin #stdout 0s 4412KB
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https://ideone.com/C2We2k
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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