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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. #define el "\n"
  4. #define ll long long
  5. #define ull unsigned long long
  6. #define se second
  7. #define fi first
  8. #define be begin()
  9. #define en end()
  10. #define Faster cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(0);
  11.  
  12. int kDigitsNumbers(int *a, int n, int k)
  13. {
  14.     int ans = 0;
  15.     for(int i = 0; i < n; i++)
  16.     {
  17.         int x = abs(a[i]);
  18.         string s = to_string(x);
  19.         if(s.size() == k) ans++;
  20.     }
  21.     return ans;
  22. }
  23. int main()
  24. {
  25.     Faster;
  26.     int n, k; cin >> n >> k;
  27.     int *a = new int[n];
  28.     for(int i = 0; i < n; i++) cin >> a[i];
  29.     cout << kDigitsNumbers(a, n, k);
  30.     return 0;
  31. }
  32.  
  33.  
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin
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4 3
123 -999 0 2222
stdout
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2
https://ideone.com/UJkfUd
language:
C++14 (gcc 8.3)
created:
10 days ago
visibility:
public

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