def insert(diff, x1, y1, x2, y2, c): diff[x1][y1] += c diff[x2 + 1][y1] -= c diff[x1][y2 + 1] -= c diff[x2 + 1][y2 + 1] += c n, m, q = map(int, input().split()) diff = [[0] * (m + 2) for _ in range(n + 2)] # 初始化差分矩阵 for i in range(1, n + 1): row = list(map(int, input().split())) for j in range(1, m ...