func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, i, x, y;     cin >> n;     long long a[n], b[n - 1], c[n - 2];     for (i = 0; i < n; i++) cin >> a[i];     sort(a, a + n);     for (i = 0; i < n - 1; i++) cin >> b[i];     sort(b, b + (n - 1));     for (i = 0; i < n - 2; i++) cin >> c[i];     sort(c, c + (n - 2));     for (i = 0; i < n; i++) {       if (a[i] != b[i]) {         x = a[i];         break;       }     }     for (i = 0; i < n - 1; i++) {       if (b[i] != c[i]) {         y = b[i];         break;       }     }     cout << x << endl;     cout << y << endl;   }   