from collections import deque

class Union_Find():
    def __init__(self, N):
        self.size = [1] * N
        self.parent = [i for i in range(N)]

    def find(self, x):
        if self.parent[x] == x:
            return x
        self.parent[x] = self.find(self.parent[x])
        return self.parent[x]

    def is_same(self, x, y):
        return self.find(x) == self.find(y)

    def unit(self, x, y):
        x, y = self.find(x), self.find(y)
        
        if x == y:
            return x
        
        if self.size[x] < self.size[y]:
            x, y = y, x
        
        self.size[x] += self.size[y]
        self.parent[y] = x
        return x


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

UF = Union_Find(N)

dq = deque()
for i in range(N):
    dq.append(i)

used = [False] * N

for i in range(Q):
    
    q = list(map(int, input().split()))
    
    if q[0] == 1:
        
        q[1] -= 1
        q[2] -= 1
        used[UF.find(q[1])] = True
        used[UF.find(q[2])] = True
        
        used[UF.unit(q[1], q[2])] = False

        while used[dq[0]]:
            dq.popleft()

        while used[dq[-1]]:
            dq.pop()
    
    else:

        q[1] -= 1

        if len(dq) == 1:
            print(-1)
        elif UF.is_same(dq[0], q[1]):
            print(dq[-1] + 1)
        else:
            print(dq[0] + 1)