#include<iostream>
#include<cstring>
#include<cstdio>
using namespace std;
int nxt[1000005],n,m;
char s[1000005],p[1000005];
int main(){
	scanf("%d%d",&n);
	scanf("%s",p+1);
	for(int i=2,j=0;i<=n;i++){
		while(p[i]!=p[j+1]&&j!=0)j=nxt[j];
		if(p[i]==p[j+1])j++;
		nxt[i]=j;
	}	
	cout<<n-nxt[n];
	return 0;
} 

请问大佬们，为何我输入时多打了1个%d却没CE?悬关