Classes:

human:
- punya hp
- punya attack
- punya name

1. warrior (is a human)
- punya attack multiplier X, jadi 1 serangannya X * attack

2. mage (is a human)
- attack powernya jadi healing power

3. Rogue(is a human)


interaction:
1. warrior:
- Ketemu warrior lain atau rogue: diserang
- Ketemu mage: di heal (+hp)

2. mage:
- Ketemu warrior atau rogue: ga diapa-apain
- Ketemu mage lain: diserang

3. rogue:
- Ketemu warrior: ga diapa-apain
- Ketemu mage: di heal (+hp)
- Ketemu rogue lain: diserang.

3. mage A ketemu mage B:
mage A: diserang mage b

Flow:
Ada 3 operasi:
1. add character (name, class, hp, attack)
2. interact character A, character B. (A, B = namanya)
3. print info character A (A = namanya)