c_cpp 所有子阵列的按位AND

Posted 2021-05-14

#include<bits/stdc++.h>
using namespace std;
int subarays(int a[],int n){
	int ans;
	for(int i = 0;i < n;i++){
		if(!i){
		ans = a[i];	
		}else{
		ans = ans&(a[i]);
		}
	}
	return ans;
}
int main(){
  int n;
  cin >> n;
  int a[n];
  for(int i = 0;i < n;i++){cin >> a[i];}
  cout << subarays(a,n)<< endl;
  
  
}