Submission #575361

#	Time	Username	Problem	Language	Result	Execution time	Memory
575361		birthdaycake	A Difficult(y) Choice (BOI21_books)	C++17	0 / 100	2 ms	208 KiB

books

#include <bits/stdc++.h>
 
#include "books.h"
 
using namespace std;
 
long long b[200001], vs[200001];
 
 
void idk(int x, int y){
    vector<int>fin;
    for(int i = x; i <= y; i++) fin.push_back(i);
    answer(fin);
}
void solve(int n, int k, long long a, int s) {
    long long tot = 0;
    vector<int>fin;
    for(int i = 1; i <= n; i++) {
        b[i] = skim(i);
        if(i <= k)  tot += b[i];
        vs[i] = 0;
    }
    for(int i = k; i >= 1; i--){
        int prev = i;
        for(int j = i + 1; j < n; j++){
            if(!vs[j] && tot - b[prev] + b[j] <= 2 * a){
                prev = j;
            }
        }
        tot -= b[i];
        tot += b[prev];
        vs[prev] = 1;
    }
    tot = 0;
    for(int i = 1; i <= n; i++){
        if(vs[i]){
            fin.push_back(i);
            tot += b[i];
        }
    }
    if(tot >= a && tot <= 2 * a) answer(fin);
    
    impossible();
    
}

• 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