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

    def leader(self, x):
        if self.parent_or_size[x] < 0: return x
        else:
            self.parent_or_size[x] = self.leader(self.parent_or_size[x])
            return self.parent_or_size[x]

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

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

    def size(self, x):
        return -self.parent_or_size[self.leader(x)]

N, Q = map(int, input().split())

uf = UnionFind(N)

l, r = 0, N - 1

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