#include<iostream>

int main() {
	int matches[10];

	matches[0] = 6;
	matches[1] = 2;
	matches[2] = 5;
	matches[3] = 5;
	matches[4] = 4;
	matches[5] = 5;
	matches[6] = 6;
	matches[7] = 3;
	matches[8] = 7;
	matches[9] = 6;

	int n;
	std::cin >> n;

	if (n == 3) {
		std::cout << 7;
		n -= 3;
	} else {
		std::cout << 1;
		n -= 2;
	}
	while(n >= 2){
		if (n != 3) {
			std::cout << 1;
			n -= 2;
		} else {
			std::cout << 7;
			n -= 3;
		}
	}

	std::cout << std::endl;
	return 0;
}