お題
n^n^nの下2桁を求めよ(^はべき乗、nは1以上の整数)

1 => 1
2 => 16 (2^2^2 = 2^4 = 16)
3 => 87 (3^3^3 = 3^27 = 7625597484987)
4 => 96
11 => 11
13 => 53
100 => 0
777 => ??