func_code_string: #include <bits/stdc++.h>   using namespace std;   inline long long qr() {     long long x = 0, f = 1;     char ch;     while (!isdigit(ch = getchar()))       if (ch ==  - ) f = -1;     for (; isdigit(ch); x = x * 10 + ch - 48, ch = getchar())       ;     return x * f;   }   const int N = 100010;   int n, k, a[N], res;   int s[N], top, b[N], c[N];   int lt[N], nt[N];   vector<int> ans[500];   int LIS() {     for (int i = 1; i <= top; ++i) b[i] = lt[i] = nt[i] = 0;     s[top = 1] = 1e5 + 1;     for (int i = 1; i <= n; ++i) {       int p = upper_bound(s + 1, s + 1 + top, a[i]) - s;       s[p] = a[i];       lt[i] = b[p];       b[p] = i;       nt[i] = b[p - 1];       if (p == top) s[++top] = 1e5 + 1;     }     return top - 1;   }   void Find(int x) {     ans[++res].clear();     for (int i = b[x]; i; i = nt[i]) ans[res].push_back(a[i]), a[i] = -1;   }   void Div(int n) {     for (int i = 1; i <= n; ++i) {       ans[++res].clear();       for (int j = b[i]; j; j = lt[j]) ans[res].push_back(a[j]);     }   }   int main() {     int kase = qr();     while (kase--) {       n = qr();       res = 0;       for (int i = 1; i <= n; ++i) a[i] = qr();       while (n) {         int k = LIS();         if (1LL * k * (k + 1) > 2 * n)           Find(k);         else {           Div(k);           break;         }         int ct = 0;         for (int i = 1; i <= n; ++i)           if (a[i] != -1) a[++ct] = a[i];         n = ct;       }       printf( %d n , res);       for (int i = 1; i <= res; ++i) {         int l = ans[i].size();         printf( %d  , l);         for (int j = l - 1; j >= 0; --j) printf( %d  , ans[i][j]);         puts(  );       }     }     return 0;   }   