Untitled

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

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

    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
        {
            break;
        }
    }
    for ( int j = 0; j < n - i; j++ )
    {
        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);
    }
}