import sys
input = lambda :sys.stdin.readline()[:-1]
ni = lambda :int(input())
na = lambda :list(map(int,input().split()))
yes = lambda :print("yes");Yes = lambda :print("Yes");YES = lambda : print("YES")
no = lambda :print("no");No = lambda :print("No");NO = lambda : print("NO")
#######################################################################


n, q = na()

a = na()
f = [i for i in range(n) if a[i] == 1]
rui = [0] * (n + 1)
for i in range(n):
    rui[i+1] = rui[i] + (a[i] == 9)
from bisect import bisect_left
for _ in range(q):
    l, r = na()
    l -= 1
    res = rui[r] - rui[l]
    while True:
        x = bisect_left(f, l)
        if x >= len(f) or f[x] >= r:
            break
        res += r - f[x] - 1
        l = f[x] + 1
    print(res)