Kertoma

input/code.cpp: In function 'int main()':
input/code.cpp:14:22: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |                 scanf("%d", &t);
      |                 ~~~~~^~~~~~~~~~

#include <bits/stdc++.h>

using namespace std;

double l(int n){ // log10(n!)
	if(n == 1) return 0;
	return log10(n)+l(n-1);
}

int main(){
	int i = 0, t, s=0;
	int a[10];
	while(i<=9){
		scanf("%d", &t);
		a[i++]=t;
		s+=t;
	}

	i=1;	
	if(s<4){ // last length to be shared between factorials = 3
		// No way i'm making a algorithm just for like 4 different options
		if(a[7]) i=6;
		else if(a[6]) i=3;
		else if(a[1]) i=5;
		else if(a[4]) i=4;
		else i = 2; 
	}else for(t=200000; t>0; t/=2) while(!(l(i+t)-(double)s>(double)0)) i+=t; //amount of numbers = log10 x
	printf("%d", i);
}

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