无法正常造出输出。

#include <bits/stdc++.h>
using namespace std;

const string NAME = "U580678"; //题目名称 

//打开文件 
void data_start(string s) {
	string tres = "data/" + NAME + s, resin = tres + ".in", resout = tres + ".out";
	freopen(resin.c_str(), "r", stdin);
	freopen(resout.c_str(), "w", stdout);
}

//给出完成提示 
void data_end(string s) {
	string res = NAME + s;
	freopen("CON", "w", stdout);
	printf("数据点 %s 已生成完成！\n", res.c_str());
}
const int N = 1e3 + 10;
int a[N][N];bool vis[N][N];
int dx[6] = {0, 0, 0, 1, -1};
int dy[6] = {0, 1, -1, 0, 0};
int n, maxn = -1e9, minn = 1e9;bool can;
void check(int x, int y, int h) {
	vis[x][y] = 1;
	if(x == n && y == n) {
		can = 1;
		return;
	}
	for (int i = 1; i <= 4; i ++) {
		int tx = x + dx[i], ty = y + dy[i];
		if(!vis[tx][ty] && tx >= 1 && tx <= n && ty >= 1 && ty <= n && abs(a[tx][ty] - a[x][y]) <= h) {
			check(tx, ty, h);
		}
	}
}
void solve() {
	scanf("%d", n);
	for (int i = 1; i <= n; i ++) {
		for (int j = 1; j <= n; j ++) {
			scanf("%d", a[i][j]);
			minn = min(minn, a[i][j]);
			maxn = max(maxn, a[i][j]);
		}
	}
	int l = minn, r = maxn;
	while(l <= r) {
		int mid = (l + r) / 2;
		for (int i = 1; i <= n; i ++) {
			for (int j = 1; j <= n; j ++) {
				vis[i][j] = 0;
			}
		}
		can = 0;check(1, 1, mid);
		if(can) 
			r = mid - 1;
		else 
			l = mid + 1;
	}
	printf("%d", l);
}
signed main() {
	for(int Ti = 1; Ti <= 10; Ti++) {
		data_start(to_string(Ti));
		solve();
		data_end(to_string(Ti));
	}
	return 0;
}