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#include <bits/stdc++.h>
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using namespace std;
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int n;
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int main() {
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cin >> n;
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//特判
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if (n == 0) {
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printf("0");
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exit(0);
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}
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//如果是负数，输出负号
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if (n < 0) n = -n, printf("-");
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//数位分离
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bool flag = false;//是否出现过非零数字
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//示例： 800 --->8
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//示例2： 8001 --->1008
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//示例3：108001 --->100801
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while (n) {
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int a = n % 10;
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n /= 10;
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//出现过非0数字
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if (a == 0 && !flag) continue;
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else if (!flag) flag = true;
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cout << a;
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}
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return 0;
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}
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