Kertoma

#include <bits/stdc++.h>

using namespace std;
using ll = long long;

const int N =1e5;
const int inf = 1e9;
const double e = exp(1.0);


ll dg(int num){
    if(num<0)return 0;
    if(num==1)return 1;
    double d = (((double)num * log10((double)num/e) + log10(2*e*(double)num)/2.0));
    return floor(d) + 1;
}


int main(){

    vector<int> k(10);
    ll s = 0;
    for(int&x:k)cin>>x, s+=x;
    // cout << s << "\n";
    if(s<=6){
        int x = 1;
        for(int i = 1; i <= 9; ++i){
            x *= i;
            int cur = x;
            vector<int> am(10);
            while(cur){
                am[cur%10]++;
                cur/=10;
            }
            if(am==k){
                cout << i << "\n";
                return 0;
            }
        }
        return 0;
    }
    for(int i = 10; i <= N; ++i){
        if(dg(i)==s){
            cout << i << "\n";
            return 0;
        }
    }
    



    
}

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: ACCEPTED

Test 12

Group: 3

Verdict: ACCEPTED

Test 13

Group: 3

Verdict: ACCEPTED

Test 14

Group: 3

Verdict: ACCEPTED

Test 15

Group: 3

Verdict: WRONG ANSWER

Test 16

Group: 3

Verdict: WRONG ANSWER