n, q = map(int, input().split())
a = list(map(int, input().split()))
one = set()
nine = [0]*(n+1)
for i in range(n):
    if a[i] == 1:
        one.add(i+1)
    elif a[i] == 9:
        nine[i+1] += 1
    nine[i+1] += nine[i]

ans = 0
for _ in range(q):
    l, r = map(int, input().split())
    ans = 0
    for o in one:
        if l <= o < r:
            ans += r - o
    ans += nine[r] - nine[l-1]
    print(ans)