oj.uz

Submission #531118

# Submission time Handle Problem Language Result Execution time Memory
531118 2022-02-27T19:16:07 Z bucz Rack (eJOI19_rack) C++14
40 / 100
 1 ms 204 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int MOD = 1e9+7;


int main(){
	int n; ll k;
	cin >> n >> k;
	k--;
	ll v=1;
	for(int i=0;i<n;i++){
		if(k%2==0){
			v=v*2%MOD;
		} else {
			v=v*2+1%MOD;
		}
		k=k/2;
	}
	ll p=1;
	for(int i=0;i<n;i++){
		p=p*2%MOD;
	}
	cout << v-p+1;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct

Subtask #3
0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Incorrect 1 ms 204 KB Output isn't correct
15 Halted 0 ms 0 KB -