#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
 
 
int main() {
    int **arr, arrqtd, queries;
 
    cin >> arrqtd >> queries;
 
    arr = (int **) malloc(sizeof(int*)*arrqtd);  
    for (int i = 0; i < arrqtd;i++){
        int size;
 
        cin >> size;
        arr[i] = (int *) malloc(sizeof(int)*size);
 
        for(int j = 0; j < size;j++){
            int value;
            cin >> value;
            arr[i][j] = value;
        }
    }
 
    for (int i = 0; i < queries;i++){
        int row,col;
        cin >> row >> col;
        cout << arr[row][col] << endl;
    }
    return 0;
}

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10 10
3 916135 272188 794963
3 178997 502468 671251
1 122266
3 223511 996043 990104
3 319694 335208 200789
2 867809 273793
1 925358
1 71140
1 862238
1 994309
6 0
5 0
5 0
7 0
5 0
6 0
3 2
3 1
0 0
9 0