#include <iostream>
#include <string>

using namespace std;

int main() {
	int n;
	while (cin >> n) {
		int e = 1;
		while (e <= 100000) {
			e *= 10;
			if (n % e) {
				cout << (n-e/10) << endl;
				break;
			}
		}
	}

	return 0;
}