func_code_string: #include <bits/stdc++.h>   using namespace std;   long long GCD(long long a, long long b) { return b ? GCD(b, a % b) : a; }   const long long N = 2e5 + 7;   const long long inf = 1e6 + 1;   const long long mod = 998244353;   int t, n, m, a[N];   struct node {     int def, s;     bool operator<(const node& a) const { return def < a.def; }   } b[N];   bool cmp(const node& a, int x) { return a.def < x; }   int main() {     cin >> t;     while (t--) {       cin >> n;       for (int i = 1; i <= n; i++) cin >> a[i];       cin >> m;       for (int i = 1; i <= m; i++) cin >> b[i].def >> b[i].s;       sort(b + 1, b + 1 + m);       for (int i = m - 1; i >= 1; i--) {         b[i].s = max(b[i].s, b[i + 1].s);       }       bool ok = true;       int minn = 2 * n, ans = 0, last = 0;       for (int i = 1; i <= n; i++) {         int q = lower_bound(b + 1, b + 1 + m, a[i], cmp) - b;         if (q > m) {           ok = false;           break;         }         minn = min(minn, b[q].s);         if (last + minn < i) {           ans++;           last = i - 1;           minn = b[q].s;         }       }       if (ok == false)         cout <<  -1 n ;       else         cout << ans + 1 <<   n ;     }     return 0;   }   