from bisect import bisect_left

N, Q = map(int, input().split())
XW = [list(map(int, input().split())) for _ in range(N)]
XQ = list(map(int, input().split()))
XW.sort()
XWA = [0]
WA = [0]
X = []
for i in range(N):
    x, w = XW[i]
    XWA.append(XWA[i] + x * w)
    WA.append(WA[i] + w)
    X.append(x)
sumw = WA[-1]
for xq in XQ:
    tmp = 0
    a = bisect_left(X, xq)
    tmp += XWA[-1] - XWA[a] - (WA[-1] - WA[a]) * xq
    tmp += (WA[a] - WA[0]) * xq - (XWA[a] - XWA[0])
    print(tmp)