#include <iostream>
using namespace std;

int main() {
cout << "Hello world!!87878!" << endl;
int param[4] = {1,3,5,7};
int i,j,k,l,m;
int count = 1;
for(i=0;i<10;i++)
{
	if (i==0)
	{
		count = 4;
	}
	else
	{
		count = count*4;
	}
	//for(j=0;j<4;j++)
	//{
		//for(k=0;k<4;k++)
		//{
			//for(l=0;l<4;l++)
			//{
				//count++;
				//cout << param[i] << param[j] << param[k] << param[l] << endl;
			//}
		//}
	//}
}
cout << count << endl;
	return 0;
}