#include <bits/stdc++.h>

using namespace std;
int n;
const int N = 15;
int b[N], idx;

int main() {
    cin >> n;
    //特判
    if (n == 0) {
        printf("0");
        exit(0);
    }
    //如果是负数，输出负号
    if (n < 0) n = -n, printf("-");
    //数位分离
    while (n) {
        int a = n % 10;
        n /= 10;
        b[idx++] = a;
    }
    //下标
    int i = 0;
    //去掉前导0
    while (!b[i]) i++;
    //输出
    for (; i < idx; i++)cout << b[i];
    return 0;
}