func_code_string: #include <bits/stdc++.h>   using namespace std;   const int N = 100000 + 50;   const int X = 1024;   int n, k, x;   int arr[N];   int freq[X], freq2[X];   inline void brute() {     int seen_till = 0;     for (int i = 0; i < X; i++) {       if (freq[i] != 0) {         if (!seen_till) {           int dec = (freq[i] + 1) / 2;           freq2[i ^ x] += dec;           freq2[i] += (freq[i] - dec);         } else {           int dec = (freq[i]) / 2;           freq2[i ^ x] += dec;           freq2[i] += (freq[i] - dec);         }       }       seen_till += freq[i];       seen_till %= 2;     }     for (int i = 0; i < X; i++) {       freq[i] = freq2[i];     }     memset(freq2, 0, sizeof freq2);   }   int main() {     ios ::sync_with_stdio(false);     cin >> n >> k >> x;     for (int i = 1; i <= n; i++) {       cin >> arr[i];       freq[arr[i]]++;     }     while (k--) {       brute();     }     int mn = 1e9, mx = -1;     for (int i = 0; i < X; i++) {       if (freq[i] != 0) {         if (i < mn) mn = i;         if (i > mx) mx = i;       }     }     cout << mx <<     << mn << endl;   }   