s = input()
m = int(input())
n = len(s)
d = [0] * n
for i in range(n - 1):
    d[i + 1] = d[i] + (s[i] == s[i + 1])
o = []
for i in range(m):
    a, b = map(int, input().split())
    o.append(d[b - 1] - d[a - 1])
print("\n".join(map(str, o)))