#include <stdio.h>
int validate_checksum(int *mem, int n) {
int i;
int cs=0;
for(i=0;i<n-1;i++){
cs = mem[i] ^ cs;
}
if(cs == mem[i]) return 1;
else return 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;
}