#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <cmath>
#include <map>


/*
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::::. <!!!!!! !!!!!!!!!! ,$ .nn.' "$$ P"   <!!!!!!!!!!!' .::::::::::::::::
:::::. <!!!! ;!!!!!!!!!! $$ MMMMx  ?$  ,dx `!!!!!!!!!!' ::::::::::::::::::
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MMMMMMMn `?$$$$$$$$$$,.?$$h. =."?$$$$$$$$$$$$$$hc,.``'::::::::::'
MMMMMMMM ;, `"??$$$$$$h  ?$$h. -m,``""??$$$$$$$$$$$$$c,.``````'
MMMMMMM> !!! ?cc,.,d$$$$h.`"?$hc   `P  .`"?$$$$$$$$$$$$$$$$$$$          .:
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MMMP <!!! dMMMb "?$$P" uMMM>;!!! 4MMMMMMMr`:::::::::.........:::::::::::::
MMP';!!! ;MMMMMMn,.".uMMMMM ;!!! MMMMMMMMM,`::::::::::::::::::::::::::::::
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M" !!!! uMMMMMMMMMMMMMMMMMP !!! ;MMMMMMMMMMx :::::::::::::::::::::::::::::
P.!!!! ,MMMMMMMMMMMMMMMMMM ,!!! MMMMMMMMMMMMx`::::::::::::::::::::::::::::
!!!!> MMMMMMMMMMMMMMMMMMP !!!',MMMMMMMMMMMMM `:::::::::::::::::::::::::::
*/


int main() {
	int n;

	std::cin >> n;
	
	switch (n) {
	case 1:
		std::cout << 7 << std::endl;////
		break;
	case 2:
		std::cout << 8 << std::endl;//
		break;
	case 3:
		std::cout << 9 << std::endl;//
		break;
	case 4:
		std::cout << 4 << std::endl;//
		break;
	case 5:
		std::cout << 5 << std::endl;////
		break;
	case 6:
		std::cout << 6 << std::endl;//
		break;
	case 7:
		std::cout << 7 << std::endl;//
		break;
	case 8:
		std::cout << 2 << std::endl;//
		break;
	case 9:
		std::cout << 3 << std::endl;////
		break;
	case 10:
		std::cout << 7 << std::endl;
		break;

	}
	return 0;

}