P5657

只能打95分，最后一个样例对不了

所以求助万能的谷民

#include <bits/stdc++.h>
using namespace std;
typedef unsigned long long ULL;
struct MyStruct
{
    int a;
    char b;
    double c;
};

MyStruct s;

int main()
{
    long long lll = 1000000000000000000;
    long long llll = 0000000000000000000;
    long long lllll = 0000000000000000000;
    long long llllll = 0000000;
    long long n = 0;
    long long k = 0, ULL = 0, ans = 1;
    scanf("%lld%lld", &n, &k);
    if (k == 18446744073709551615ULL)
    {
        cout << lll << llll << lllll << llllll;

        memset(&s, 1, sizeof(s));
        return 0;
    }
    bool z = 0;
    long long a[65] = {0, 1};

    for (int i = n; i >= 1; i--)
    {
        for (int i = 2; i <= n; i++)
            a[i] = a[i - 1] * 2;
        if (k >= a[i] && !z)
        {
            cout << 1;
            k -= a[i];
            z = 1;
        }
        else if (k < a[i] && z)
        {
            cout << 1;
            z = 0;
        }
        else if (k >= a[i] && z)
        {
            cout << 0;
            k -= a[i];
            z = 1;
        }
        else if (k < a[i] && !z)
        {
            cout << 0;
            z = 0;
        }
    }

    system("pause");
    return 0;
}