@T2lbsBlIqhUMOX20qtbX
N mod 13 = 5
N mod 18 = 3
13a + 5 = 18b + 3
a = 4
b = 3
13(4) + 5 = 57
N mod 11
= 57 mod 11
= 2 mod 11
= 2
yang singapura ada dua :v lol