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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. vector<int> a;
  5.  
  6. int main()
  7. {
  8.     int n;
  9.     cin >> n;
  10.     a.resize(n);
  11.     for (int i = 0; i < n; ++i) {
  12.         cin >> a[i];
  13.     }
  14.     int fibonacci_triples = 0;
  15.     for (int i = 2; i < n; ++i) {
  16.         if (a[i - 2] + a[i - 1] == a[i]) {
  17.             ++fibonacci_triples;
  18.         }
  19.     }
  20.     cout << fibonacci_triples << endl;
  21.     return 0;
  22. }
Success #stdin #stdout 0s 4536KB
comments (?)
stdin
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10
1 2 3 5 3 8 1 1 2 3
stdout
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5
https://ideone.com/4J8Oyo
language:
C++14 (gcc 8.3)
created:
2 years ago
visibility:
secret

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