import sys
input = sys.stdin.readline

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

INF = 10**18
dp = [INF] * (N + 1)
dp[1] = 0

for i in range(2, N + 1):
    dp[i] = dp[i-1] + 1

res = []
for _ in range(Q):
    tmp = input().split()
    if tmp[0] == "1":
        x = int(tmp[1])
        res.append(dp[x])
    else:
        x = int(tmp[1])
        c = int(tmp[2])
        if c < dp[x]:
            before = dp[x]
            dp[x] = c
            # 前方: xより右にc+1, c+2..の候補が無ければcost更新
            for i in range(x+1, N+1):
                if dp[i] > dp[i-1] + 1:
                    dp[i] = dp[i-1] + 1
                else:
                    break
            # 後方: xより左に同様
            for i in range(x-1, 0, -1):
                if dp[i] > dp[i+1] + 1:
                    dp[i] = dp[i+1] + 1
                else:
                    break
print('\n'.join(map(str, res)))