func_code_string: #include <bits/stdc++.h>   using namespace std;   long long a[201000];   long long vis[201000];   int main() {     int t;     cin >> t;     while (t--) {       int n;       scanf( %d , &n);       for (int i = 1; i <= n; i++) scanf( %lld , &a[i]), vis[i] = 0;       int m;       scanf( %d , &m);       for (int i = 1; i <= m; i++) {         long long x, y;         scanf( %lld%lld , &x, &y);         vis[y] = max(vis[y], x);       }       for (int i = n - 1; i >= 1; i--) {         if (vis[i] < vis[i + 1]) vis[i] = vis[i + 1];       }       long long ans = 1;       long long num = 0, co = 0;       int vis1 = 0;       for (int i = 1; i <= n; i++) {         num++;         if (vis[num] >= max(co, a[i])) {           co = max(co, a[i]);         } else {           ans++;           num--;           if (vis[1] < a[i]) vis1 = 1;           num = 1, co = a[i];         }       }       if (vis1)         printf( -1 n );       else         printf( %lld n , ans);     }   }   