int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */
    int n, q, size, value, which, index;
    cin >> n >> q;
    vector<vector<int>> nvec;
    for (int i = 0; i < n; ++i) {
        cin >> size;
        vector<int> ivec;
        for (int j = 0; j < size; ++j) {
            cin >> value;
            ivec.push_back(value);
        }
        nvec.push_back(ivec);
    }
    for (int k = 0; k < q; ++k) {
        cin >> which >> index;
        cout << nvec[which][index] << endl;
    }
    return 0;
}

int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */   
    int n,q,k,i,j;
    cin >> n >> q;
    vector<vector<int> >arr(n);
    for (i=0; i<n; ++i){
        cin >> k;
        arr[i].resize(k);
        for(j=0 ; j<k; ++j){
            cin >> arr[i][j];
        }       
    }

    for(int l=0; l<q; ++l){
        cin >> i >> j;
        cout << arr[i][j]<<endl;
    }  
        
    return 0;
}

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


int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */   
    int n;                                  //number of Arrays
    int q;                                  //number of Queries
    int tempValue;                          //would be used to store the input value of each element in inner vector
    
    //storing the number of arrays in 'n' and number of queries in 'q'
    std::cin >> n >> q;                    
    
    ////////////////////////
    /*creation of vectors*/
    //////////////////////
    
    //creating 'n' number of vector<int>
    std::vector<std::vector<int>> a(n);
    

    int numberOfElements;                    //number of elements in each inner vector
    //for each vector
    for(int i = 0; i < n; i++){
        //store the number of elements desired
        std::cin >> numberOfElements;
        //runs 'numberOfElements times
        for(int j = 0; j < numberOfElements; j++){
            std::cin >> tempValue;
            a[i].push_back(tempValue);
        }
    }
    
    ///////////////////////
    /*queries of vectors*/
    /////////////////////
    
    int outVector;                          //stores the queried outer vector index
    int inVector;                           //stores the queried inner vector index
    //runs 'q' times
    for(int i = 0; i < q; i++){
        std::cin >> outVector >> inVector;
        std::cout << a[outVector][inVector];
        std::cout << std::endl;
    }
  
    return 0;
}