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  1. // Problem: C. Spy Detected!
  2. #include <bits/stdc++.h>
  3. using namespace std;
  4.  
  5. void solve()
  6. {
  7.     int n;
  8.     cin >> n;
  9.     int a[105];
  10.     for (int i = 0; i < n; i++)
  11.     {
  12.         cin >> a[i];
  13.     }
  14.     if (a[0] == a[1])
  15.     {
  16.         for (int i = 2; i < n; i++)
  17.         {
  18.             if (a[i] != a[0])
  19.             {
  20.                 cout << i + 1;
  21.                 break;
  22.             }
  23.         }
  24.     }
  25.     else
  26.     {
  27.         if (a[0] == a[2])
  28.         {
  29.             cout << 2; // (1 + 1)
  30.         }
  31.         else
  32.         {
  33.             cout << 1;
  34.         }
  35.     }
  36.     cout << '\n';
  37. }
  38. int main()
  39. {
  40.     int t = 1;
  41.     cin >> t;
  42.     while (t--)
  43.     {
  44.         solve();
  45.     }
  46. }
Success #stdin #stdout 0.01s 5320KB
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1
https://ideone.com/TXYAjW
language:
C++14 (gcc 8.3)
created:
4 days ago
visibility:
public

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