Kyselyt

#include <iostream>
#include <cmath>
#include <string>

using namespace std;

int main()
{
    int q = 0;
    cin >> q;
    int* qa = new int[q];
    for(int i = 0; i<q; i++)
    {
        cin >> qa[i];
    }
    for(int i = 0; i<q; i++)
    {
        int query = qa[i];
        if(query < 10) 
        {
            cout << query << "\n";
            continue;
        }
        else if(query % 2 == 0)
        {
            if(fmod(trunc(query/10),2) != 0)
            {
                cout << to_string((trunc(query/10) + 1)/2)[0];
            }
            else
            {
                cout << to_string(trunc(query/10) /2)[0];
            }
        }
        else
        {
            if(fmod(trunc(query/10),2) != 0)
            {
                char lsd = to_string(query)[to_string(query).length()-1];
                char out = '1';
                if(lsd == '1') out = '0';
                else if (lsd == '3') out = '1';
                else if (lsd == '5') out = '2';
                else if (lsd == '7') out = '3';
                else if (lsd == '9') out = '4';
                cout << out;
            }
            else
            { 
                char lsd = to_string(query)[to_string(query).length()-1];
                char out = '1';
                if(lsd == '1') out = '5';
                else if (lsd == '3') out = '6';
                else if (lsd == '5') out = '7';
                else if (lsd == '7') out = '8';
                else if (lsd == '9') out = '9';
                cout << out;
            }
        }
        cout << "\n";
    }
}

Test 1

Group: 1

Verdict: WRONG ANSWER

Test 2

Group: 2

Verdict: WRONG ANSWER

Test 3

Group: 3

Verdict: WRONG ANSWER