#include using namespace std; #ifdef LOCAL #define eprintf(...) fprintf(stderr, __VA_ARGS__) #else #define eprintf(...) 42 #endif #define rep(i,n) for(int i=0;i<(int)(n);i++) #define repi(i,a,b) for(int i=(int)(a);i<(int)(b);i++) #define all(x) (x).begin(),(x).end() #define foreach(u,v) for(auto (u) : (v)) #define pb push_back #define mp make_pair #define mt make_tuple typedef long long ll; typedef pair pii; typedef vector vi; typedef vector vvi; typedef pair pll; typedef vector vl; const int inf = 1e9; const ll linf = 1LL<<60; const ll mod = 1e9 + 7; const double eps = 1e-9; /* */ int main() { string nn, mm; cin >> nn >> mm; reverse(all(nn)); reverse(all(mm)); int n = nn[0]-'0'; int m = mm[0]-'0'; if(mm.size() > 1) m = m*10 + mm[1]-'0'; m %= 4; if(m == 0) m = 4; cout << (int)pow(n, m)%10 << endl; return 0; }