俺这个菜鸡又来找神犇们求助了qaq

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int N,M,mid,i,flag; cin>>N>>M;
	int trees[N];
	for(i = 0;i < N;i++){
		cin>>trees[i];
	}
	sort(trees,trees + N);
	mid = trees[i]>>1;
	while(1){
		for(int j = i;j >= 0;j--){
			if(trees[j] > mid){
				flag += (trees[j] - mid);
			}
			else break;
		}
		if(flag == M){
			cout<<mid;
			break;	
		}
		if(flag < M) mid--;
		if(flag > M) mid++;
		flag = 0;
	}
	return 0;
}

输入样例

5 20
4 42 40 26 46

代码无输出 疑似卡死循环qaq

菜鸡检查不出来是为什么卡