# coding: utf-8
# Your code here!

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

par = [i for i in range(N+1)]
rank = [0]*(N+1)
def find(x):
    if par[x] == x:
        return x
    else:
        par[x] = find(par[x]) #経路圧縮
        return par[x]
def same(x,y):
    return find(x) == find(y)
def unite(x,y):
    x = find(x)
    y = find(y)
    if x == y:
        return 0
    if rank[x] < rank[y]:
        par[x] = y
    else:
        par[y] = x
        if rank[x]==rank[y]:rank[x]+=1


is_par=set([i for i in range(N)])

def recog(n):
    if n in is_par:
        if find(n)!=n:
            is_par.remove(n)
    else:
        if find(n)==n:
            is_par.add(n)

l,r=0,N-1
for _ in range(Q):
    q=input().split()
    if q[0]=="1":
        u,v=int(q[1])-1,int(q[2])-1
        unite(u,v)
        
        while l!=find(l):
            l+=1
        while r!=find(r):
            r-=1

    else:
        v=int(q[1])-1
        print(-1 if l==r else l+1 if same(v,r) else r+1)