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Submission #999711

# Submission time Handle Problem Language Result Execution time Memory
999711 2024-06-16T05:41:50 Z vjudge1 Rack (eJOI19_rack) C++17
100 / 100
 45 ms 53760 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define mod 1000000007
ll binpow(ll a, ll b){
    ll res = 1;
    if (b == -1){
        return 0;
    }
    while (b != 0){
        if (b % 2 == 0){
            b /= 2;
            a *= a;
            a %= mod;
        }
        else{
            b -= 1;
            res *= a;
            res %= mod;
        }
    }
    return res;
}
vector<vector<ll>> ve;
ll ans = 1;
ll f(ll n, ll k, ll va){
    ll val = 0;
    if (n == 0){
        return 0;
    }
    if (n <= 63){
        ll op = pow(2, n - 1);
        if (k >= op){
            val += binpow(2, va);
            ve.push_back({n - 1, k - op, va + 1});
            ans += val;
            return 0;
        }
    }
    ve.push_back({n - 1, k, va + 1});
    return 0;
}
int main(){
    ll n, k;
    cin>>n>>k;
    k--;
    ve.push_back({n, k, 0});
    for (int i = 0; i < ve.size(); i++){
        f(ve[i][0], ve[i][1], ve[i][2]);
        ans %= mod;
    }
    cout<<ans;
}

Compilation message

rack.cpp: In function 'int main()':
rack.cpp:48:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |     for (int i = 0; i < ve.size(); i++){
      |                     ~~^~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 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 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 424 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #3
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 424 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 3 ms 3344 KB Output is correct
15 Correct 45 ms 53760 KB Output is correct