1 // <2115.cpp> - Sun Oct  9 12:58:23 2016 2 // This file is made by YJinpeng，created by XuYike‘s black technology automatically. 3 // Copyright (C) 2016 ChangJun High School, Inc. 4 // I don‘t know what this program is. 5  6 #include <iostream> 7 #include <cstdio> 8 #define LL long long 9 using namespace std;10 int quick_pow(int a,int b,int p){11     int w=1;12     while(b){13         if(b&1)w=(w*a)%p;14         b>>=1;a=(a*a)%p;15     }16     return w;17 }18 int main()19 {20     freopen("2115.in","r",stdin);21     freopen("2115.out","w",stdout);22     int n;scanf("%d",&n);23     int ans=(quick_pow(2,n/2,10000)-1)*(quick_pow(2,(n-1)/2,10000)-1);24     ans%=10000;printf((n>=15?"%.4d":"%d"),ans);25     return 0;26 }