leetcode

0 #pragma GCC optimize("fast")

1 static int _ = []() {

2 ios_base::sync_with_stdio(false);

3 cout.tie(NULL);

4 cin.tie(NULL);

5 return 0;

6 }();

7

8 class Bank {

9 const int n;

10 vector<long long> balance;

11

12 inline bool valid(int acc) const { return acc >= 1 && acc <= n; }

13

14 public:

15 Bank(const vector<long long> &balance) : n(balance.size()), balance(balance) {}

16

17 inline bool transfer(int account1, int account2, long long money) {

18 if (!valid(account1) || !valid(account2)) return false;

19 if (!withdraw(account1, money)) return false;

20 if (!deposit(account2, money)) return false;

21 ;

22 return true;

23 }

24

25 inline bool deposit(int account, long long money) {

26 if (!valid(account)) return false;

27 balance[account - 1] += money;

28 return true;

29 }

30

31 inline bool withdraw(int account, long long money) {

32 if (!valid(account)) return false;

33 if (money > balance[account - 1]) return false;

34 balance[account - 1] -= money;

35 return true;

36 }

37 };