Untitled

#include <bits/stdc++.h>
using namespace std;

int main()
{
    int n, q, V;
    cin >> n >> q >> V;
    int max = -1;
    vector<int> arr;

    arr.emplace_back(V);

    int i = 0;
    for (i; i < n; i++)
    {
        int x, v;
        cin >> x >> v;
        if (x <= arr[arr.size() - 1])
        {
            arr.emplace_back(v + arr[arr.size() - 1]);
            max = v + arr[arr.size() - 1];
        }
        else
        {
            continue;
        }
    }

    for (int i = 0; i < q; i++)
    {
        int x;
        cin >> x;
        if (max < x)
            cout << -1 << "\n";
        else
            cout << lower_bound(arr.begin(), arr.end(), x) - arr.begin() << "\n";
    }
}