代码

#include <bits/stdc++.h>
using namespace std;
constexpr int S2=1<<20;
char buf2[S2],*l2=buf2;
#define putchar(c) (l2==buf2+S2&&(fwrite(buf2,1,S2,stdout),l2=buf2),*l2++=(c))
int _st[22];
template<typename T>inline void write(T x)
{
	int tp=0;
	do
		_st[++tp]=x%10;
	while(x/=10);
	while(tp)
		putchar(_st[tp--]+'0');
}
int main() {
	ios::sync_with_stdio(false);
	mt19937 rnd(0xb6e0);
	for (int i{0};i<1e6;++i) write(rnd());
	return 0;
}

评测结果