func_code_string: #include <bits/stdc++.h>   struct {     inline operator int() {       int x;       return scanf( %d , &x), x;     }     inline operator long long() {       long long x;       return scanf( %lld , &x), x;     }     template <class T>     inline void operator()(T &x) {       x = *this;     }     template <class T, class... A>     inline void operator()(T &x, A &...a) {       x = *this;       this->operator()(a...);     }   } read;   const int maxn = 300005;   int l[maxn], r[maxn];   int main() {     int T = read;     while (T--) {       int n = read;       std::fill(l, l + n + 1, 0);       std::fill(r, r + n + 1, 0);       for (int i = 1; i <= n; i++) {         int x = read;         if (!l[x]) l[x] = i;         r[x] = i;       }       int ans = 0, max = 0;       for (int x = 1, y = 0, now = 0; x <= n; x++)         if (l[x]) {           if (r[y] < l[x])             ++now;           else             now = 1;           ++ans;           max = std::max(max, now);           y = x;         }       ans -= max;       printf( %d n , ans);     }   }   