Discussion on Variable Sized Arrays Challenge

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5 hours ago+ 0 comments

int num_arrays,num_queries,num_ele,idx,to_print;
cin>>num_arrays>>num_queries;

int *array[num_arrays];
for(int i=0;i<num_arrays;i++){
    cin>>num_ele;
    array[i] = (int*)malloc(num_ele*sizeof(int));
    for(int j=0;j<num_ele;j++) cin>>array[i][j];   
}
for(int i=0;i<num_queries;i++){
    cin>>idx>>to_print;
    cout<<array[idx][to_print]<<endl;
}

return 0;

}

6 hours ago+ 0 comments

This is my simplest one

"It does not include any pair datatype"

int main() {
    int n, q;   cin>>n>>q;
		
    vector<vector<int>> v;
    
    for(int i=0; i<n; ++i){
        int size;    cin>>size;
				
        vector<int> v1(size);
        
        for(int j=0; j<size; ++j){
            cin>>v1[j];
        } 
        v.push_back(v1);
    }   
		
    for(int i=0; i<q; ++i){
        int first, second;  cin>>first>>second;
        
        cout<<v[first][second]<<endl;
    }
    return 0;
}

2 days ago+ 0 comments

//check my code
#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#include <utility>


int main() {
    int n, q, t;
    std::cin >> n >> q;
    std::vector<std::vector<int>>v;
    
    for(int i=0; i<n; i++){
        std::cin >> t;
        std::vector<int> vt;
        vt.assign(t, 0);
        for(int j=0; j<t; j++){
            std::cin >> vt[j];
        }
        v.push_back(vt);
    }
    
    
    std::vector<std::pair<int, int>>k;
    int first, second;
    for(int i=0; i<q; i++){
        std::cin >> first >> second;
        k.push_back({first, second});
    }
    
    for(int i=0; i<q; i++){
        std::cout << v[k[i].first][k[i].second] << std::endl;
    }
    return 0;
}``

3 days ago+ 0 comments

I solved it using vector

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


int main() {
    int numArrays, numQueries;
    cin >> numArrays>> numQueries;
    vector<vector<int>> Arrays;

    for (int x=0; x<numArrays; x++){
        int length;
        cin >> length;
        vector<int> arr;
        
        for (int ll = 0;ll<length;ll++){
            int temp;
            cin >> temp;
            arr.push_back(temp);
        }
        Arrays.push_back(arr);
    }
    for (int count = 0; count<numQueries;count++){
        int arrayCount, NumberIndex;
        cin >> arrayCount >> NumberIndex;
        cout << Arrays[arrayCount][NumberIndex] << endl;        
    }
    
    return 0;
}

3 days ago+ 1 comment

i am willing to write the code myself but i cannot understand what they want from me, i've studied c++ for several years and i probably know how to code the solution with ease, BUT i am not able to understand assignment, and this is not the only exarcise that i have this problem, almost all of them i solved using pattern seeking in the input and output sample.

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