Kertoma

const { readSync } = require('fs');
const { Buffer } = require('buffer');


function readline() {
  let buf = Buffer.alloc(1000, 10);
  for(i=0; i<1000; i++) {
    if(!readSync(0, buf, i, 1) || buf[i]===10) {
      return buf.toString("utf8").split("\n")[0];
    }
  }
}

const nums = readline().split(" ").map(e=>Number(e));
const len = nums.reduce((v,e)=>v+e,0);

let factorial=1, exponent=0, x=2;
let xnums=[];

for(;x<10;x++) {
  factorial*=x;
  if(Number(factorial.toExponential().split("e+")[1])+1==len) {
    xnums=String(factorial).split("").map(e=>Number(e));
    if(nums.every((e,i)=>xnums.filter(f=>f===i).length===e)) {
      console.log(x.toString());
      x=1e100;
    }
  }
}

for(;x<1e100;x++) {
  factorial*=x;
  exponent+=Number(factorial.toExponential().split("e+")[1])
  factorial=Number(factorial.toExponential().split("e+")[0])
//  console.log([x, factorial, exponent].join(" "));
  if(exponent+1==len) {
    console.log(x.toString());
    break;
  }
}

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: ACCEPTED

Test 16

Group: 3

Verdict: ACCEPTED