N,Q = map(int,input().split())
x = [0]
w = [0]
for i in range(N):
    a,b=map(int,input().split())
    x.append(a)
    w.append(b)
X = list(map(int,input().split()))

Sxw = [0]
Sw = [0]
for i in range(N+1):
    Sxw.append(Sxw[i]+x[i]*w[i])
    Sw.append(Sw[i]+w[i])

k = 0
for q in range(Q):
    while k<=N and X[q]>=x[k]:
        k+=1
    print(Sxw[N+1]-2*Sxw[k]+X[q]*(2*Sw[k]-Sw[N+1]))