Submission #237733

#	Time	Username	Problem	Language	Result	Execution time	Memory
237733		Dynamic_Cast	Rack (eJOI19_rack)	C++14	40 / 100	5 ms	384 KiB

rack

//#include <bits/stdc++.h> C++11
#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <cmath>
#include <stdio.h>
#include <time.h>
#include <iomanip>
#include <stdlib.h>
#include <list>
#include <stack>
#include <queue>
#include <climits>
#include <map>
#include <set>
#include <sstream>
using namespace std;
typedef long long ll;
typedef pair<int, int> pi;
typedef vector<int> vi;
#define PB push_back
#define MP make_pair
vi v;
int N;
ll sum = 1;
/*void result(int n, int s)
{
    int temp;
    if (n == 1)
    {
        temp = (1 + s) % 1000000007;
        v.PB(1 + s);
        temp = ll(pow(2, ll(N - 1)) + 1 + s) % 1000000007;
        v.PB(temp);
    }
    else
    {
        result(n - 1, s);
        result(n - 1, s + pow(2, N - n));
    }
}*/
ll result(int index, int n)
{
    index--;
    int c = n;
    for (ll s = 1; c >= 1; s = (2 * s) % 1000000007)
    {
        c--;
        if (c >= 60)
        {
            continue;
        }
        if ((index % ll(pow(ll(2), c + 1))) >= ll(pow(ll(2), c)))
        {
            sum = (sum + s) % 1000000007;
        }
    }
    return sum;
}
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    ll k;
    cin >> N >> k;
    cout << result(k, N) << "\n";
    /*result(N, 0);
    for(int i=0;i<int(v.size());i++){
        cout<<v[i]<<" ";
    }
    cout << v[k - 1] << "\n";*/
}

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 0 / 60