#include<iostream>
#include<vector>

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;

	std::vector<int> result;
	if (n == 3) {
		result.push_back(7);
		n -= 3;
	} else {
		result.push_back(1);
		n -= 2;
	}
	while(n >= 2){
		if (n != 3) {
			result.push_back(1);
			n -= 2;
		} else {
			result.push_back(7);
			n -= 3;
		}
	}

	for (size_t i = 0; i < result.size(); i++) {
		std::cout << result[i];
	}
	std::cout << std::endl;
	return 0;
}