第五个测试点没过 输入是

200
1 1 1 1 1 1 1 1 1 2 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 10 11 12 13 14 15 16 17 18 19 20 21 22 23 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 5 6 7 8 9 1 1 1 1

输出是1

代码如下

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

int main()
{
	int sum,s=0,m=0;
	cin>>sum;
	int xl[sum];
	memset(xl,0,sizeof(xl));
	for(int i=0;i<sum;i++){
		cin>>xl[i];
	}
	for(int i=0;i<(sum-1);i++){
		if(xl[i]==xl[i+1]-1){
			s++;
		}else{
			m=s;
			s=0;
		}
	}
	if(m<s){
		m=s;
	}
	cout<<m+1;
	return 0;
}

求指点qwq