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#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;
}