from sys import stdin


def main():
    input = lambda: stdin.readline()[:-1]

    N = int(input())
    grid = [0] * (N + 1)
    while 1:
        if N % 2:
            k = 2
        else:
            k = 1
        for x in range(1, N + 1):
            y = x + k - 1
            if not grid[x]:
                if k == 1:
                    print(k, x, flush=1)
                    grid[x] = 1
                    break
                elif not grid[y]:
                    print(k, x, flush=1)
                    grid[x] = 1
                    grid[y] = 1
                    break

        t = int(input())
        if not t or t == 1:
            return
        k, x = map(int, input().split())
        if t == 2:
            return
        grid[x - 1] = 1
        grid[x + k - 1] = 1
        N -= k


main()