Kertoma

import java.util.Scanner;
import java.math.BigInteger;
import java.util.Arrays;

public class Kertoma {
    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        int[] nums = new int[10];
        boolean isDifferent = true;

        nums[0] = scan.nextInt();
        nums[1] = scan.nextInt();
        nums[2] = scan.nextInt();
        nums[3] = scan.nextInt();
        nums[4] = scan.nextInt();
        nums[5] = scan.nextInt();
        nums[6] = scan.nextInt();
        nums[7] = scan.nextInt();
        nums[8] = scan.nextInt();
        nums[9] = scan.nextInt();

        int n = 1;
        int sum = 0;

        for(int i = 0; i < 10; i++) {
            sum = sum + nums[i];
        }
        BigInteger factorial = new BigInteger("1");
        if(sum >= 4) {
            while(isDifferent) {
                
                factorial = factorial.multiply(BigInteger.valueOf(n));

                int sum2 = factorial.toString().length();

                if(sum == sum2) {
                    isDifferent = false;
                }

                n++;
            }
            System.out.println(n-1);
        } else {

            int[] nums2 = {0,1,0,0,0,0,0,0,0,0};
            if(Arrays.equals(nums,nums2)) {
                System.out.println(1);
            }

            nums2[1] = 0; nums2[2] = 1;
            if(Arrays.equals(nums,nums2)) {
                System.out.println(2);
            }

            nums2[2] = 0; nums2[6] = 1;
            if(Arrays.equals(nums,nums2)) {
                System.out.println(3);
            }

            nums2[6] = 0; nums2[2] = 1; nums2[4] = 1;
            if(Arrays.equals(nums,nums2)) {
                System.out.println(4);
            }

            nums2[2] = 0; nums2[4] = 0;
            nums2[0] = 1; nums2[1] = 1; nums2[2] = 1;
            if(Arrays.equals(nums,nums2)) {
                System.out.println(5);
            }

            nums2[1] = 0; nums2[7] = 1;
            if(Arrays.equals(nums,nums2)) {
                System.out.println(6);
            }
        }
    }
}

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

Test 5

Group: 1, 2, 3

Verdict: ACCEPTED

Test 6

Group: 1, 2, 3

Verdict: ACCEPTED

Test 7

Group: 2, 3

Verdict: ACCEPTED

Test 8

Group: 2, 3

Verdict: ACCEPTED

Test 9

Group: 2, 3

Verdict: ACCEPTED

Test 10

Group: 2, 3

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 12

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 13

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 14

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 15

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 16

Group: 3

Verdict: TIME LIMIT EXCEEDED