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CatalinCosmin

504

Jan 19th, 2020
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C++ 0.37 KB | None | 0 0
  1. #include <bits/stdc++.h>
  2. #define N 1005
  3.  
  4. using namespace std;
  5.  
  6. int main()
  7. {
  8.     int v[N], n, i, a, b;
  9.     bool apartin=1;
  10.     cin >> n;
  11.     for(i=1;i<=n;++i)
  12.         cin >> v[i];
  13.     a=v[1]; b=v[n];
  14.     if(a>b) swap(a, b);
  15.     for(i=2;i<n&&apartin;++i)
  16.         if(a>v[i]||v[i]>b) apartin=0;
  17.     if(apartin) cout << "DA";
  18.     else cout << "NU";
  19.     return 0;
  20. }
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