#include <iostream>
#include <string>
using namespace std;
 
int main() {
	// source number as string
	string x;
	cin >> x;
	// convert it into a number
	int y = 0;
	for (int i = 0, ilen = x.size(); i < ilen; ++i) {
		y *= 8; // it's octal
		y += x[i] - '0';
	}
	// add 1 to that number
	++y;
	// if we have a code 7777, next should be 0000
	y = y & 07777;
	// clear string x, so that we can
	x.clear();
	// write an octal number there as string
	while (y) {
		x = char(y % 8 + '0') + x;
		y /= 8;
	}
	// output that number
	cout << x << endl;
}

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

MTE1Nw==

1157