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n = int(raw_input())
raw_MAP = raw_input().split()
q = int(raw_input())
MAP = []
for i in raw_MAP:
    MAP.append(int(i))
for i in range(q):
    this = raw_input()
    this_c = this.split()
    if this_c[0] == '1':
        now = int(this_c[1])
        re = 0
        while now <= n:
            re += 1
            now += MAP[now - 1]
        print re
    else:
        MAP[int(this_c[1])-1] = int(this_c[2])
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