fork download
copy 
  1. #include <iostream>
  2. using namespace std;
  3. int main() {
  4.     int t;
  5.     cin >> t;
  6.     while (t--) {
  7.         int n;
  8.         cin >> n;
  9.         int a[100];
  10.  
  11.         for (int i = 0; i < n; ++i) {
  12.             cin >> a[i];
  13.         }
  14.  
  15.         if (a[0] != a[1]) {
  16.             if (a[0] == a[2]) {
  17.                 cout << 2 << endl;
  18.             } else {
  19.                 cout << 1 << endl;
  20.             }
  21.         } else {
  22.             for (int i = 2; i < n; ++i) {
  23.                 if (a[i] != a[0]) {
  24.                     cout << i + 1 << endl;
  25.                     break;
  26.                 }
  27.             }
  28.         }
  29.     }
  30.  
  31.     return 0;
  32. }
Success #stdin #stdout 0s 5280KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/LnAn9A
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!