func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long n, c[100000], b[100000], a[100000], s1 = 0, s2 = 0, s3 = 0;     cin >> n;     for (int i = 0; i < n; i++) {       cin >> a[i];       s1 += a[i];     }     for (int i = 0; i < n - 1; i++) {       cin >> b[i];       s2 += b[i];     }     for (int i = 0; i < n - 2; i++) {       cin >> c[i];       s3 += c[i];     }     cout << s1 - s2 << endl << s2 - s3;     return 0;   }   