from sys import stdin

class UnionFind():
    def __init__(self, n):
        self.parent_or_size = [-1] * n

    def leader(self, x):
        while self.parent_or_size[x] >= 0: x = self.parent_or_size[x]
        return x

    def same(self, x, y):
        return self.leader(x) == self.leader(y)

    def merge(self, x, y):
        rx, ry = self.leader(x), self.leader(y)
        if rx == ry: return
        if self.parent_or_size[rx] > self.parent_or_size[ry]: rx, ry = ry, rx
        self.parent_or_size[rx] += self.parent_or_size[ry]
        self.parent_or_size[ry] = rx

N, Q = map(int, stdin.readline().split())

uf = UnionFind(N)

l, r = 0, N - 1

for _ in range(Q):
    query = list(map(int, stdin.readline().split()))
    if query[0] == 1:
        uf.merge(query[1] - 1, query[2] - 1)
        while l != uf.leader(l): l += 1
        while r != uf.leader(r): r -= 1
    else:
        print(-1 if l == r else l + 1 if uf.same(query[1] - 1, r) else r + 1)