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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int f[100000];
  6. int main() {
  7.     int N, n[1001];
  8.     cin >> N;
  9.     int check = 0;
  10.     for (int i = 1; i <= N; ++i) {
  11.         cin >> n[i];
  12.         if (n[i] != n[i - 1] && f[n[i]] > 0) {
  13.             check = 1;
  14.         }
  15.         ++f[n[i]];
  16.  
  17.     }
  18.     int nr_colors = 0;
  19.     for (int i = 0; i <= 100000; ++i) {
  20.         if (f[i] > 0) {
  21.             ++nr_colors;
  22.         }
  23.     }
  24.     cout << nr_colors << "\n";
  25.     if (check == 0) {
  26.         cout << "DA";
  27.     } else if (check == 1) {
  28.         cout << "NU";
  29.     }
  30.     return 0;
  31. }
Success #stdin #stdout 0s 4376KB
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DA
https://ideone.com/WWGi1C
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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