func_code_string: #include <bits/stdc++.h>   using namespace std;   bool h[1000009];   int main() {     int n, m, k, tmp, tmp1, pos = 1;     cin >> n >> m >> k;     for (int i = 0; i < m; ++i) {       cin >> tmp;       h[tmp] = true;     }     if (h[1]) {       cout << pos << endl;       return 0;     }     for (int i = 0; i < k; ++i) {       cin >> tmp >> tmp1;       if (pos == tmp || tmp1 == pos) {         pos = (tmp == pos) ? tmp1 : tmp;         if (h[pos]) break;       }     }     cout << pos << endl;     return 0;   }   