no match for 'operator>>' (operand types are 'std::istream {aka std::basic_istream}' and 'int [100]')报错信息

#include<bits/stdc++.h>
using namespace std;
int a[100][100],n,ans=0;
int main(){
  cin>>n;
  for(int i=1;i<=n;i++){
  	for(int j=1;j<=n;j++){
  		cin<<a[i];
  	} 
  }
  for(int i=1;i<=n;i++){
  	ans+=a[i][n];
  	ans+=a[i][1];
  	ans+=a[n][i];
  	ans+=a[n][1];
  }
  ans-=a[1][1];
  ans-=a[n][n];
  ans-=a[1][n];
  ans-=a[n][1];
  cout<<ans;
  return 0;
}