Number

#include <stdio.h>
#include <string.h>
#include <iostream>
#include <fstream>
#include <sstream>
#include <queue>
#include <algorithm>
#include <vector>
#include <set>
#include <cstdlib>
#include <stack>

using namespace std;

#define all(x) (x).begin(),x.end()
#define ii pair<int, int>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define ll long long

#define MAXN 100001

int a[MAXN];

int main() {
	string s;
	int pos = -1;
	cin >> s;
	for (int i = 1; i < (int)s.length(); i++) {
		int cur = s[i] - '0';
		int prev = s[i-1] - '0';
		if (cur > prev) {
			pos = i-1;
			break;
		}	
	}

	if (pos == -1) {
		pos = s.length()-1;
	}
	for (int i = 0; i < (int)s.length(); i++) {
		if (i != pos) {
			cout << s[i];
		}
	}
	return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: ACCEPTED

Test 19

Verdict: ACCEPTED

Test 20

Verdict: ACCEPTED

Test 21

Verdict: ACCEPTED

Test 22

Verdict: ACCEPTED

Test 23

Verdict: ACCEPTED

Test 24

Verdict: ACCEPTED

Test 25

Verdict: ACCEPTED