#include<bits/stdc++.h>
//#include<Windows.h>
#define ll long long
using namespace std;
int n,x,a[7],tnt,b[114514];
int main(){
	cin>>n;
	for(int i=1;i<=6;i++)a[i]=99999999;
	//for(int i=1;i<=n;i++)cout<<b[i]<<" ";
	for(int i=1;i<=n;i++){
		cin>>x;
		b[i]=x+b[i-1];
		x=b[i]%7;
		a[x]=min(a[x],i);
		tnt=max(tnt,i-a[x]);
		//cout<<i<<" "<<a[x]<<endl;
	}
	cout<<tnt;
	return 0;
}

为啥一到大数据就过不了了

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