#include <stdio.h> int main() { int arr[1000][1000]; int n = 0, m = 0; scanf("%d %d", &n, &m); for (int i = 0; i < n + 2; i++)//遍历数组 { for (int j = 0; j < m + 2; j++) { arr[i][j] = 0; } } char temp = 0; for (int i = 1; i <= n; i++)//符号换数字 { for (int j = 1; j <= m;...