func_code_string: #include <bits/stdc++.h>   using namespace std;   const int maxn = 100;   long long n, k;   int a[15];   long long rc[15], p[15], ans;   void solve() {     scanf( %d%d , &n, &k);     k++;     scanf( %d , &a[1]);     rc[1] = 1;     long long now = 1, tmp;     int ss = 0;     for (int i = 2; i <= n; i++) {       scanf( %d , &a[i]);       tmp = 1;       while (ss < a[i]) now *= 10, tmp *= 10, ss++;       p[i - 1] = tmp - 1;       rc[i] = now;     }     ans = 0;     for (int i = 1; i < n; i++) {       if (k >= p[i])         ans += p[i] * rc[i], k -= p[i];       else {         ans += rc[i] * k;         k = 0;       }     }     if (k) ans += rc[n] * k;     printf( %lld n , ans);   }   int main() {     int t;     scanf( %d , &t);     while (t--) solve();     return 0;   }   