#include <bits/stdc++.h>
#define pb push_back
#define all(x) x.begin(), x.end()
#define small_black_cock cout
using namespace std;
using ll = long long;




int main() {
    int t;
    cin >> t;
    for(int k = 0; k < t; k++){
        int n ;
        cin >> n;
        vector<int> a(n), b(n), d(n);
        for(int i = 0; i < n; i++) cin >> a[i];
        for(int i = 0; i < n; i++) cin >> b[i];
        bool flag = false;
        int nozero = -1, zero = -1;
        for(int i =0; i < n; i++){
            if(b[i] == 0){
                d[i] = a[i];
                if(nozero != -1){
                    if(d[i] > d[nozero]){
                        flag = true;
                        break;
                    }
                }
                zero = i;
            }else{
                d[i] = a[i] - b[i];
                if(d[i] < 0){
                    flag = true;
                    break;
                }
                if(zero != -1){
                    if(d[zero] >  d[i]){
                        flag = true;
                        break;
                    }
                    zero = -1;

                }
                if(nozero != -1){
                    if(d[nozero] > d[i]){
                        flag = true;
                        break;
                    }
                }
                nozero = i;
//                cout << nozeroID << " ";
            }


        }

        if(!flag){
            cout<< "YES" << "\n";
        }else{
            cout << "NO" << "\n";
        }

    }

    return 0;
}