#include <bits/stdc++.h>
using namespace std;

#define int long long

const int N = 1e6 + 9;

int n, a[N];

int countDigits (int n){
    int digits = 0;
    int length = 1; 
    int base = 9;
    while (n > 0) {
        int count = min(n, base);    
        digits += count * length;   
        n -= count;                      
        length++;                        
        base *= 10;                    
    }

    return digits;
}

signed main (){
    ios_base::sync_with_stdio (false);
    cin.tie (NULL);
    cout.tie (NULL);
    int T; cin >> T;
    while (T--){
        int type, x; cin >> type >> x;
        if (type == 1) cout << countDigits (x) << '\n';
        else {
            int l = 1, r = 1e9, ans = -1;
            while (l <= r){
                int mid = l + r >> 1;
                if (countDigits (mid) >= x){
                    ans = mid; r = mid - 1;
                } else l = mid + 1;
            }
            if (countDigits (ans) == x) cout << ans << '\n';
            else cout << -1 << '\n';
        }
    }
}