30pts 求助大佬

#include <iostream>
using namespace std;
int n,s=0;
int a[2000000],b[2000000];
int main(){
	cin>>n;
	for (int i=0;i<n;i++){
		cin>>a[i];
	} 
	for (int i=0;i<n;i++){
		s=i;
		for (int j=0;j<n;j++) b[j]=a[j];
		for (int j=0;j<=i;j++){
			a[j]=b[s];
			s--;
		}
		for (int j=0;j<=i;j++){
			if(a[j]==0) a[j]=1;
			else a[j]=0;
		}
	}
	for (int q=0;q<n;q++) cout<<a[q]<<" ";
	return 0;
}