代码

char by[1000007];
void count_3d(int n, const unsigned *x, const unsigned *y, const unsigned *z, unsigned *out) {
	for(int i=0; i<n; ++i) by[y[i]]=1;
int s=0;
for(int i=0; i<n; ++i)s+=by[i];
while(s>65535) ++*by;
}

评测结果