代码

#include <stdio.h>
#include <string.h>

#define MAXN 1000010

unsigned a[MAXN];

int main() {
	fread(a, 1, MAXN * 4, stdin);
	int n = a[0];
	
	// Rearrange the ducks a[1] .. a[n] here
	memset(a, 0, sizeof(a));
	
	fwrite(a + 1, 1, n * 4, stdout);
	return 0;
}

评测结果