oj.uz

Submission #833613

# Submission time Handle Problem Language Result Execution time Memory
833613 2023-08-22T07:09:14 Z tolbi Rack (eJOI19_rack) C++17
0 / 100
 1 ms 300 KB 
#include <bits/stdc++.h>
using namespace std;
const int MOD = 1e9+7;
#define tol(bi) (1LL<<((int)(bi)))
int solve(int n, long long k){
	if (n>64 || k>tol(n-1)){
		return ((long long)solve(n-1,k)*2ll)%MOD;
	}
	else {
		if (k==1){
			return 1ll;
		}
		int nek = k/2;
		if (k%2){
			return solve(n-1,k/2+1);
		}
		else {
			return (solve(n-1,k/2)+tol(n-1))%MOD;
		}
	}
}
int main(){
	long long n,k;
	cin>>n>>k;
	cout<<solve(n,k)<<endl;
}

Compilation message

rack.cpp: In function 'int solve(int, long long int)':
rack.cpp:13:7: warning: unused variable 'nek' [-Wunused-variable]
   13 |   int nek = k/2;
      |       ^~~

Subtask #1
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 300 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Incorrect 0 ms 212 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 300 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Incorrect 0 ms 212 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 300 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Incorrect 0 ms 212 KB Output isn't correct
5 Halted 0 ms 0 KB -