Kyselyt

#include <iostream>
#include <math.h> 
using namespace std;
typedef unsigned long long ull;

ull power(ull b, ull e) {
	ull result = 1;
	for (ull i = 0; i < e; ++i) {
		result *= b;
	}
	return (result);
}

int main() {
	ull in[1001];
	ull digitSum[19];
	ull inputLen;
	ull inputDigits = 1;
	ull numWithAns;
	ull index;
	digitSum[0] = (ull)0;
	cin>>inputLen;
	for(ull i = (ull)1; i < (ull)19; i++) {
		digitSum[i] = digitSum[i-(ull)1] + (i*9*power((ull)10, i-(ull)1));
	}
	for(ull i = (ull)0; i < inputLen; i++) {
		cin>>in[i];
		for(ull j = (ull)1; j < (ull)19; j++) {
			if(in[i]<=digitSum[j] && in[i]>digitSum[j-(ull)1]) {
				inputDigits = j;
				break;
			}
		}
		numWithAns = ((in[i]-digitSum[inputDigits-(ull)1])/inputDigits+pow((ull)10, inputDigits-(ull)1)-(ull)1);
		index = (digitSum[inputDigits]-in[i])%inputDigits;
		cout<<numWithAns%power((ull)10,index+(ull)1)/power((ull)10,index)<<"\n";
	}
	return 0;
}

Test 1

Group: 1

Verdict: WRONG ANSWER

Test 2

Group: 2

Verdict: WRONG ANSWER

Test 3

Group: 3

Verdict: WRONG ANSWER