#include void mul(int *a11,int *a12,int *a21,int *a22,int w11,int w12,int w21,int w22){ int t11 = *a11 * w11 + *a12 * w21; int t12 = *a11 * w12 + *a12 * w22; int t21 = *a21 * w11 + *a22 * w21; int t22 = *a21 * w12 + *a22 * w22; *a11 = t11; *a12 = t12; *a21 = t21; *a22 = t22; } int main(){ int n; while(scanf(" %d",&n)){ int a11=1,a12=1,a21=1,a22=0; for(int i=0;i