#include <stdio.h>
 
int power(int a,int n){
 
	while(n-->0)
 
		a*=a;
 
	return a;
}
int main(void){
 
	int a,b,n;
 
	a=2;
	n=4;
	b=power(a,n);
 
	return 0;
 
 
}
				I2luY2x1ZGUgPHN0ZGlvLmg+CgppbnQgcG93ZXIoaW50IGEsaW50IG4pewoJCgl3aGlsZShuLS0+MCkKCQkKCQlhKj1hOwoJCglyZXR1cm4gYTsKfQppbnQgbWFpbih2b2lkKXsKCQoJaW50IGEsYixuOwoJCglhPTI7CgluPTQ7CgliPXBvd2VyKGEsbik7CglwcmludGYoIiVk44GuJWTmnaHjga8lZCIsYSxuLGIpOwoJCglyZXR1cm4gMDsKCQoJCn0=