func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long t;     cin >> t;     while (t--) {       long long n;       cin >> n;       long long a[n], b[n];       for (int i = 0; i < n; i++) cin >> a[i];       for (int i = 0; i < n; i++) cin >> b[i];       long long flag = 0, p = 0, ne = 0;       if (a[0] != b[0]) {         flag = 1;         cout <<  NO  << endl;         continue;       }       if (a[0] == 1) p++;       if (a[0] == -1) ne++;       for (int i = 1; i < n; i++) {         if ((a[i] > b[i] && ne == 0) || (a[i] < b[i] && p == 0)) {           flag = 1;           cout <<  NO  << endl;           break;         }         if (a[i] == 1) p++;         if (a[i] == -1) ne++;       }       if (flag == 0) cout <<  YES  << endl;     }     return 0;   }   