#include<iostream>
#include<cstdio>
#include<stack>

using namespace std;

void Convert(int number,int target) {   //target为目标进制
	stack<int> myStack;
	if(number == 0){
		myStack.push(0);
	}
	while(number != 0) {
		myStack.push(number % target);
		number /= target;
	}
	while(!myStack.empty()) {
		printf("%d",myStack.top());
		myStack.pop();
	}
	printf("\n");
}

int main() {
	int number;
	while(scanf("%d",&number) != EOF) {
		Convert(number,8);
	}
	return 0;
}