#include <iostream> #include <cstdio> using namespace std; int kuaisumi(int a,int b,int k){ int answer = 1; a = a % k; while(b){ if(b%2==1){ answer *= a; answer %= k; } a = a*a; b = b/2; a = a%k; } return answer; } int main(){ int n; while(cin>>n){ cout<<kuaisumi(n,n,10)<<endl; } return 0; } |
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