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Submission #882755

# Submission time Handle Problem Language Result Execution time Memory
882755 2023-12-03T16:20:18 Z mariza Rack (eJOI19_rack) C++14
40 / 100
 0 ms 348 KB 
#include <bits/stdc++.h>
using namespace std;

//i/o optimisations
#define endl "\n"
#define fastio ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);

//data types & structures
typedef long long ll;
#define pq priority_queue

//graph structures
typedef vector<pair<ll,ll>> graph;
typedef vector<ll> nw_graph;
typedef pq<pair<ll,ll>> dij_q;

//constant values
const ll N=2e5+1;
const ll N6=1e6+1;
const ll INF=1e9+1;
const ll LOGN=18;
const ll MOD=1e9+7;

//operations
#define MID ((l+r)/2)
#define RANGE (r-l+1)

//pairs
#define f first
#define s second

//output
#define YES cout<<"YES"<<endl;
#define NO cout<<"NO"<<endl;

int main(){
    fastio;

    ll n, k;
    cin>>n>>k; k--;

    ll ans=1, x=1;
    for(ll i=n-1; i>=0; i--){
//        cout<<1<<endl;
        if(k&1<<i){
            ans+=x; ans%=MOD;
        }
        x*=2;
        x%=MOD;
    }

    cout<<ans%MOD;

    return 0;
}

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 348 KB Output is correct
4 Correct 0 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 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 344 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 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 344 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 -