#include <bits/stdc++.h>
using namespace std;
 
int main(){
  int N, Q;
  cin >> N >> Q;
  int x[N], w[N];
  for (int i = 0; i < N; i++) {
    cin >> x[i] >> w[i];
  }
  for (int i = 0; i < Q; i++) {
    int X;
    long long sum = 0;
    cin >> X;
    for (int j = 0; j < N; j++) {
      sum += abs(x[j] - X) * w[j];
    }
    cout << sum << endl;
  }
}