oj.uz

Submission #1099203

# Submission time Handle Problem Language Result Execution time Memory
1099203 2024-10-10T18:01:29 Z vjudge1 Rack (eJOI19_rack) C++17
40 / 100
 1 ms 456 KB 
#include <algorithm>
#include <iostream>
#include <bits/stdc++.h>
#include <cmath>
#include <vector>

using namespace std;
const long long mod = 1e9+7;

int binary_exponentiation(int number, int exponent)
{
    int result = 1;
    while (exponent > 0) {

        if(exponent & 1) result = result * number;

        number = number * number;
        exponent >>= 1;
    }

    return result;
}


int make_path(long long seed, int length) 
{
    long long path = 0;
    for (int i = 0; i < length; i++) {
        if (((seed >> i) & 1) == 1) path = (path + binary_exponentiation(2, length - i - 1))%mod;
    }
    return path;
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    long long int height, node;
    cin >> height >> node;
    int rows = 1 << height;

    cout << (make_path(node - 1, height) + 1)%mod << endl;
    return 0;
}

Compilation message

rack.cpp: In function 'int main()':
rack.cpp:41:9: warning: unused variable 'rows' [-Wunused-variable]
   41 |     int rows = 1 << height;
      |         ^~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 452 KB Output is correct
4 Correct 0 ms 456 KB Output is correct
5 Correct 0 ms 348 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 452 KB Output is correct
4 Correct 0 ms 456 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #3
0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 452 KB Output is correct
4 Correct 0 ms 456 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Incorrect 0 ms 348 KB Output isn't correct
12 Halted 0 ms 0 KB -