Submission #575030

#	Time	Username	Problem	Language	Result	Execution time	Memory
575030		Majid	A Difficult(y) Choice (BOI21_books)	C++17	0 / 100	3071 ms	320 KiB

books

#include<bits/stdc++.h>
#include<books.h>
using namespace std;
using ll = long long;
using db = double;
#define pb push_back
#define sz(vec) ((ll)vec.size())
#define all(vec) vec.begin(), vec.end()
#define f first
#define s second
const int MOD = 1e9 + 7;
const ll BIGINF = ((ll)1e18) + 7;
#define Speeed ios::sync_with_stdio(0);cin.tie(NULL); cout.tie(NULL);

ll nn, kk, aa;
ll arr[100007];
// ll answer(vector<int> x){
// 
//     cout<<"ok";
// }
// 
// ll skim(ll x){
// 
//     return x+2;
// }
// 
// void impossible(){
// 
//     cout<<"not ok";
// }

vector<pair<ll, ll> > d;

void c(ll siz, ll idx, ll sum){
    
    if(siz==kk){
        
        vector<int> temp;
    
        for(ll i = 0; i < kk; i++){
            
            // cout<<d[i].f<<" ";
            sum+=d[i].f;
            temp.pb(d[i].s);
        }
        
        // cout<<sum<<"\n";
        if(sum>=aa and sum<=2*aa)answer(temp);
        return;
    }
  
    if (idx > nn)return;
  
    d[siz].f = arr[idx];
    d[siz].s = idx;
    c(siz+1, idx+1, sum);
    c(siz, idx+1, sum);
}


void solve(int n, int k, ll a, int s){
    
    for(ll i = 1; i <= n; i++){
        
        arr[i] = skim(i);
    }
    
    nn = n, kk = k, aa = a;
    
    d.resize(k+1);
    c(0, 1, 0);
    impossible();    
}

// 
// int main(){
// 
//     solve(5, 3, 10, 0);
// }
// 

• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3: 0 / 10
• Subtask 4: 0 / 15
• Subtask 5: 0 / 15
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20