Submission #603811

#	Time	Username	Problem	Language	Result	Execution time	Memory
603811		Lextyle	Rack (eJOI19_rack)	C++17	100 / 100	7 ms	4052 KiB

rack

#include <bits/stdc++.h>
#pragma warning(disable : 4996)
#pragma warning(disable : 6031)
#define USACO freopen("clumsy.in", "r", stdin); freopen("clumsy.out", "w+", stdout);    
#define fastIO ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
using namespace std;
int powmod[1000000];

int main() {
	//USACO;
	fastIO;
	int n, ans = 1;
	long long k;
	cin >> n >> k;
	powmod[0] = 1;
	for (int i = 1; i < n; i++) powmod[i] = (powmod[i - 1] * 2) % 1000000007;
	for (int i = n - 1, j = 0; i >= 0; i--, j++) {
		if (k % 2 == 0) ans = (ans + powmod[i]) % 1000000007;
		k = k / 2 + (k % 2);
	}
	cout << ans << "\n";
}

Compilation message (stderr)

rack.cpp:2: warning: ignoring '#pragma warning ' [-Wunknown-pragmas]
    2 | #pragma warning(disable : 4996)
      | 
rack.cpp:3: warning: ignoring '#pragma warning ' [-Wunknown-pragmas]
    3 | #pragma warning(disable : 6031)
      |

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