Chiika-1st

#include<bits/stdc++.h>
#define endl '\n'
using namespace std;
#ifdef  ONLINE_JUDGE
    #define eprintf(...) 42
#else
        #define eprintf(...) {fprintf(stderr, __VA_ARGS__);fflush(stderr);}
#endif
clock_t startTime;
double getCurrentTime()
{
    return (double)(clock() - startTime) / CLOCKS_PER_SEC;
}
string lo, hi;
long long dp[21][165][2][2];
long long digit_dp(int level, int tar, bool lo_lim, bool hi_lim)
{
    if(tar<0)
    {
        return 0;
    }
    if(level==19)
    {
        return (tar==0);
    }
    if(dp[level][tar][lo_lim][hi_lim]!=-1)
    {
        return dp[level][tar][lo_lim][hi_lim];
    }
    int l=0, r=9;
    long long ans = 0;
    if(lo_lim)
    {
        l = lo[level]-'0';
    }
    if(hi_lim)
    {
        r = hi[level]-'0';
    }
    for(int i=l; i<=r; i++)
    {
        bool l1, l2;
        l1 = (i==lo[level]-'0' && lo_lim);
        l2 = (i==hi[level]-'0' && hi_lim);

        ans += digit_dp(level+1, tar-i, l1, l2);
    }
    return dp[level][tar][lo_lim][hi_lim] = ans;
}
vector<long long> solve(long long l, long long r)
{
    memset(dp, -1, sizeof(dp));
    lo = to_string(l); hi = to_string(r);
    reverse(lo.begin(), lo.end());  reverse(hi.begin(), hi.end());
    while(lo.size()<19)
    {
        lo.push_back('0');
    }
    while(hi.size()<19)
    {
        hi.push_back('0');
    }
    reverse(lo.begin(), lo.end());  reverse(hi.begin(), hi.end());
    long long ans[163] = { 0 };
    long long a=-1, b=0;
    for(int i=0; i<163; i++)
    {
        ans[i] = digit_dp(0, i, 1, 1);
        if(a<ans[i])
        {
            a = ans[i]; b = 1;
        }
        else if(a==ans[i])
        {
            b++;
        }
    }
    return {a, b};
}
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    int t;
    cin>>t;
    startTime = clock();
    while(t--)
    {
        long long l, r;
        cin>>l>>r;
        for(auto stuff : solve(l, r))
        {
            cout<<stuff<<" ";
        }
        cout<<endl;
    }
    eprintf("time = %.5lf\n", getCurrentTime());
    return 0;
}