public static void main(String[] args) { Scanner in = new Scanner(System.in); int T = in.nextInt(); while (T>0){ T--; int n = in.nextInt(); int[] a = new int[n]; int[] b = new int[n]; for (int i = 0; i < n; i++) { a[i] = in.nextInt(); } for (int i = 0; i < n; i++) { b[i] = in.nextInt(); } int k = 0; int preNum = -1; boolean flag = true; //尝试升序 while(k<n){ if(a[k]<preNum && b[k]<preNum){ flag = false; break; } if(a[k]<b[k]){ if(a[k]>=preNum){ preNum = a[k]; }else{ preNum = b[k]; } }else { if(b[k]>=preNum){ preNum = b[k]; }else { preNum = a[k]; } } k++; } if (flag){ System.out.println("YES"); continue; }else{ //尝试降序 flag = true; preNum = Integer.MAX_VALUE; k=0; while(k<n){ if(a[k]>preNum && b[k]>preNum){ flag = false; break; } if(a[k]>b[k]){ if(a[k]<=preNum){ preNum = a[k]; }else{ preNum = b[k]; } }else { if(b[k]<=preNum){ preNum = b[k]; }else { preNum = a[k]; } } k++; } if(flag){ System.out.println("YES"); }else{ System.out.println("NO"); } } } }