func_code_string: #include <bits/stdc++.h>   const int MAXN = 1e5 + 5;   const long long MOD = 998244353;   const int INF = 0x3f3f3f3f;   const long long LL_INF = 0x3f3f3f3f3f3f3f3f;   const double PI = acos(-1);   const double ERR = 1e-10;   const int L = 40;   const int M = 30;   using namespace std;   long long mx = -1e18;   long long mn = 1e18;   int main() {     ios_base::sync_with_stdio(NULL);     cin.tie(NULL);     cout.tie(NULL);     long long a, b[MAXN], c = 0;     cin >> a;     if (a == 1) {       cout <<  0 ;       return 0;     }     for (int i = 0; i < a; i++) {       cin >> b[i];     }     sort(b, b + a);     for (int i = 0; i < a; i++) {       c += b[a - 1] - b[i];     }     cout << c;     return 0;   }   