#include <stdio.h>
int validate_checksum(int *mem, int n) {
// Write your XOR scan logic here
int res = 0;
int *tmp = mem;
while(tmp < &mem[n-1])
{
res ^= *tmp;
tmp+=1;
}
return (res == mem[n-1])? 1 : 0 ;
}
int main() {
int n, arr[100];
scanf("%d", &n);
for (int i = 0; i < n; i++) {
scanf("%d", &arr[i]);
}
int result = validate_checksum(arr, n);
printf("%d", result);
return 0;
}