int main() { /* Enter your code here. Read input from STDIN. Print output to STDOUT */
int n, q , k , l , pl , pt; cin >> n >> q ; vector> num(n);

for (int i = 0 ; i <= n - 1 ; i++ ){
    cin >> k ;
    num[i].resize(k);
    for (int j = 0 ; j < k ; j++ )
    {
        cin >> num[i][j] ;
    }
}

for (int i = 0 ; i < q ; i++){
    cin >> pl >> pt ;
    cout << num[pl][pt] << "\n";
}

return 0;

}