记录编号	569990	评测结果	AAAAAAAAAAAAAAA
题目名称	[USACO Final95]奶牛排队	最终得分	100
用户昵称	lihaoze	是否通过	通过
代码语言	C++	运行时间	0.000 s
提交时间	2022-03-20 23:32:18	内存使用	0.00 MiB

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <cstring>
#include <vector>
#include <string>
#include <deque>
#define OPEN(_x) freopen(#_x".in", "r", stdin); freopen(#_x".out", "w", stdout)
#define MAX(_a, _b) [&](int __a, int __b) { return __a < __b ? __b : __a; }((_a), (_b))
#define MIN(_a, _b) [&](int __a, int __b) { return __a > __b ? __b : __a; }((_a), (_b))
#define ABS(_x) [&](int __x) { return __x < 0 ? -__x : __x; }(_x)
#define INT(_x) int _x = IO::read<int>();
#define fi first
#define se second 
 
using ll = long long;
using PII = std::pair<int, int>;
 
namespace IO {
    template <typename T> inline T read() {
        char ch = getchar();
        T ret = 0, sig = 1;
        while(ch < '0' || ch > '9') { if(ch == '-') sig = -1; ch = getchar(); }
        while(ch >= '0' && ch <= '9') ret *= 10, ret += ch - 48, ch = getchar();
        return ret * sig;
    }
    template <typename T> inline void write(T out) {
		if(!out) { putchar('0'), putchar(' '); return; }
        int stk[100], tt = 0;
        if(out < 0) out = -out, putchar('-');
        while(out) stk[tt++] = out % 10, out /= 10;
        for(register int i = --tt; i>=0; --i) putchar(stk[i] + 48);
        putchar(' ');
    }
    template <typename T> inline void read(T& ret) { ret = IO::read<T>(); }
    template <typename T, typename... Args> inline void read(T& x, Args&... args) { IO::read(x), IO::read(args...); }
    template <typename T, typename... Args> inline void write(T x, Args... args)  { IO::write(x), IO::write(args...); }
};
 
 
const int N = 1 << 15;
int n;
std::vector<int> chosen[N], a;
 
inline void mk_g() {
    int m = 1 << ( n - 1 );
    int tmp = m - 1;
    for (register int i = 0; i < m; ++i) {
        chosen[i].emplace_back(((i << 1) + 1) & tmp);
        chosen[i].emplace_back((i << 1) & tmp);
    }
}
 
inline void euler(int x) {
    while (chosen[x].size()) {
        int u = chosen[x][0];
        chosen[x].erase(chosen[x].begin());
        euler(u);
    }
    a.emplace_back(x);
}
 
int main() {
    #ifdef DEBUG
    OPEN(test);
    #endif
    OPEN(cowsonparade);
    IO::read(n);
 
    if(n == 1 ) {
        IO::write(0, 1);
        return 0;
    }
 
    mk_g();
    euler(0);
 
    std::reverse(a.begin(), a.end());
 
    int len = a.size();
    for (register int i = 1; i<n-1; ++i) putchar(48), putchar(' ');
    for (register int i = 0; i<len; ++i) putchar((a[i] & 1) + 48), putchar(' ');
 
    return 0;
}