AC

`#include <bits/stdc++.h> using namespace std;

int main() {

int n;
cin >> n;
int a[3];
for (int i = 0; i < 3; i++) {
	a[i] = n % 10;
	n = n / 10;
}
if (a[0] != 0) {
	cout << a[0] << a[1] << a[2];
} else if (a[0] == 0 && a[1] == 0) {
	cout << "" << a[2];
} else if (a[0] == 0 ) {
	cout << "" << a[1] << a[2];
}
return 0;

} `