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  1. Prepare
  2. C++
  3. Introduction
  4. Variable Sized Arrays
  5. Discussions

Variable Sized Arrays

  • vishnut0308
     + 0 comments
    #include <iostream>
#include <vector>
using namespace std;
//matrix problem  :X
int main() {
    int n, q;
    cin >> n >> q;
    vector<vector<int>> arr(n);

    for (int i = 0; i < n; i++) {
        int k; cin >> k;
        arr[i].resize(k);
        for (int j = 0; j < k; j++) cin >> arr[i][j];
    }

    while (q--) {
        int x, y; cin >> x >> y;
        cout << arr[x][y] << "\n";
    }
}