#include<bits/stdc++.h>
using namespace std;

int main() {
    ios_base::sync_with_stdio(0), cin.tie(0); //optimization lines
    int n, q;
    cin>>n>>q;
    
    vector<vector<int>>arr(n); //create an array of arrays
    
    for(int i = 0; i < n; i ++){ //fill the array of arrays
        int k; 
        cin>>k;
        arr[i].resize(k); // we give the array in position i the size of k 
        for(int j = 0; j < k; j++){
            cin>>arr[i][j];
        }
    }
    
    for(int i = 0; i < q; i++){
        int x,y;
        cin >> x >> y;
        cout << arr[x][y] << endl;
    }
    return 0;
}