Kyselyt

#include <iostream>
#include <cmath>
#include <vector>

using namespace std;

int main() {
	int amount;
	cin >> amount;
	int a[amount];
	for (int i = 0; i < amount; i++) {
		cin >> a[i];
	}
	for (int i = 0; i < amount; i++) {
		int curNum = a[i];
		int cur = 1;
		int number = 1;
		int index = 0;
		int j = 0;


		while (index < curNum) { // Loop until at asked index
			j = number;

			vector<int> digits;
			while (j >= 1) { // Go through all digits in j
				digits.push_back(j % 10);
				j = trunc(j / 10);
			}
			for (int z = digits.size() - 1; z >= 0; z--) {
				cur = digits[z];
				index++;
				if (index >= curNum) {
					break;
				}
			}

			number++;
		}


		cout << cur << '\n';
	}
	//while (1);
	return 0;
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 3

Group: 3

Verdict: TIME LIMIT EXCEEDED