求助几道题 https://www.luogu.com.cn/problem/U164770 https://www.luogu.com.cn/problem/U164690 U164690编译不通过代码:

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

int a[1009];
int p[100005];
int main(){
	int n,m;
	cin>>n>>m;
	for (int i = 1; i <= m; i++)	
	{
		cin>>a[i];
	}
	sort(a[1],a[m]);
	for (int i = 1; i <= m; i++)	
	{
		cout<<a[i]<<' ';
	}	
    return 0;
} 

是我菜吗