#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;


int main() {
    int num_arrays, num_queries, num_items, current_item, array_i, item_i;
    vector<int> current_array;
    scanf("%d %d", &num_arrays, &num_queries);
    vector<vector<int>> arrays;
    for (int i = 0; i < num_arrays; i++) {
        current_array = {};
        scanf("%d", &num_items);
        for (int item = 0; item < num_items; item++) {
            scanf("%d", &current_item);
            current_array.push_back(current_item);
        }
        arrays.push_back(current_array);
    }
    for (int i = 0; i < num_queries; i++) {
        scanf("%d %d", &array_i, &item_i);
        printf("%d", arrays[array_i][item_i]);
        if (i != num_queries - 1) {
            printf("\n");
        }
    }
    return 0;
}