#include<stdio.h>
 
enum state
{
	STATE_00=0,
	STATE_01,
	STATE_02,
	STATE_03
};
 
int f1(int s) { return s==0?STATE_01:STATE_02;}
int f2(int s) { return s==0?STATE_03:STATE_00;}
int f3(int s) { return s==0?STATE_00:STATE_03;}
int f4(int s) { return STATE_03;}
 
int main()
{
	int(*func[4])(int);
	func [0]= f1;
	func [1]= f2;
	func [2]= f3;
	func [3]= f4;
 
	int input[10]={1,0,0,1,1,0,0,1,1,0};
	enum state s = STATE_00;
 
	for(int i=0;i<10;i++) {s=func[s](input[i]);}
	printf("%d",s);
	return 0;
}

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