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#include <iostream>
using namespace std;

int main() {
   int n,x,a;
   cin >> n >> x;
   int t[n];

   for (int i = 0; i < n; i++){
        cin >> t[i];
   }
   a = 0;
    while(t[a]!=x || a>n)
        if (t[a]==x)
            cout << a+1 << " ";
        else
            a++;

   a = n;
   while(t[a]!=x || a<=0)
        if (t[a]==x)
            cout << a+1 ;
        else
            a--;
}