func_code_string: #include <bits/stdc++.h>   const int maxn = 3e5 + 3;   int n, a[maxn], b[maxn], m, l[maxn], r[maxn];   void solve() {     scanf( %d , &n);     m = 0;     for (int i = 0; i < n; ++i) {       scanf( %d , a + i);       b[m++] = a[i];     }     std::sort(b, b + m);     m = std::unique(b, b + m) - b;     for (int i = 0; i < n; ++i) {       a[i] = std::lower_bound(b, b + m, a[i]) - b;     }     std::fill(l, l + m, 0x7fffffff);     std::fill(r, r + m, 0x80000000);     for (int i = 0; i < n; ++i) {       l[a[i]] = std::min(l[a[i]], i);       r[a[i]] = std::max(r[a[i]], i);     }     int ans = m - 1;     for (int i = 0, j; i < m; i = j) {       for (j = i + 1; j < m && r[j - 1] < l[j]; ++j)         ;       ans = std::min(ans, i + (m - j));     }     printf( %d n , ans);   }   int main() {     int t;     scanf( %d , &t);     while (t--) solve();     return 0;   }   