def calculate_parentship(N, M, P, Q, queries):
    result = []
    for i in range(Q):
        x, f = queries[i]
        y_count = 0
        for y in range(1, M + 1):
            if (x * y) % P == f:
                y_count += 1
        result.append(y_count)
    return result

# 入力を受け取る
N, M, P, Q = map(int, input().split())
queries = []
for _ in range(Q):
    x, f = map(int, input().split())
    queries.append((x, f))

# 答えを計算して出力
results = calculate_parentship(N, M, P, Q, queries)
for res in results:
    print(res)