拿下双修，求点赞，我想要解题仙人

#include <cstdio>
#include <cctype>

const int MAX_N = 1000000;
int arr[MAX_N];

inline int read() {
int x = 0;
char c = getchar();
while (c < '0' || c > '9') c = getchar();
while (c >= '0' && c <= '9') {
x = x * 10 + (c - '0');
c = getchar();
}
return x;
}

int main() {
int n = read();
int xor_sum = 0;

for (int i = 0; i < n; i++) {
    arr[i] = read();
    xor_sum ^= arr[i];
}

if (xor_sum == 0) {
    printf("0");
    return 0;
}

int count = 0;
int high_bit = 1 << 30;
while ((xor_sum & high_bit) == 0) {
    high_bit >>= 1;
}

for (int i = 0; i < n; i++) {
    if (arr[i] & high_bit) {
        count++;
    }
}

printf("%d", count);
return 0;

}