1.uname -r 查看linux版本号2.选择合适内核下的驱动
https://elixir.bootlin.com/linux/v6.8/source/drivers/usb/serial/ch341.c
3.make & make install
4.发现/dev下没有ttyUSB0设备
5.dmesg 发现问题
6043.015612] usb 1-4.2: ch341-uart converter now attached to tty…
未达到分数线passAcCode:
#include<bits/stdc++.h>
using namespace std;
int vis[100010];
int main(){int N, K, S, ans = 0;cin >> N >> K >> S;while(N--){int sc1, sc2;cin >> sc1 >> sc2;if(sc1 < 175) continue;if(sc1 >= 17…