import sys import numpy as np def main(): input = sys.stdin.readline n, q = map(int, input().split()) uf = [-1] * n leaders = set(range(n)) def find(x): nonlocal uf y = x while uf[x] >= 0: x = uf[x] while uf[y] >= 0: z = uf[y] uf[y] = x y = z return x def union(x, y): nonlocal uf, leaders x, y = find(x), find(y) if x == y: return False if uf[x] > uf[y]: x, y = y, x uf[x] += uf[y] uf[y] = x leaders.remove(y) return True ans = [] tmp = None for i in range(q): t, *x = map(int, input().split()) if t == 1: a, b = x union(a - 1, b - 1) else: a = x[0] - 1 a = find(a) if len(leaders) == 1: ans.append(-1) else: b = leaders.pop() if b == a: tmp = b b = leaders.pop() ans.append(b + 1) leaders.add(b) if tmp is not None: leaders.add(tmp) tmp = None print('\n'.join(map(str, ans))) if __name__ == '__main__': main()