#include <stdio.h>
#include <stdlib.h>

int main(){
	int n;
	while (scanf("%d", &n) == 1){
		int i = 1;
		while(1){
			int x = n % (i * 10);
			if (x == 0){
				i = i * 10;
				
				//printf("n = %d, i: %d", n, i);
				continue;
			}
			else{
				n = n - i;
				printf("%d\n", n);
				break;
			}
		}
		
		
		//printf("n: %d\n", n);
	}
	return 0;
}