#include<stdio.h>
int main()
{
    long long n;
    scanf("%11d", &n);
    int isNegative = 0;
    if (n < 0){
        isNegative = 1;
        n = -n;
    }
    if (n == 0){
        if (isNegative)
        printf("-1");
        else
        printf("1");
        return 0;
    }
    char numstr[25];
    sprintf(numstr, "%11d", n);
    for (int i = 0; numstr[i] != '\0'; i++){
        if (numstr[i] == '0'){
            numstr[i] = '1';
        }
    }
    if (isNegative)
    printf("-%s", numstr);
    else
    printf("%s", numstr);
    return 0;
}