제출 #1032271

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1032271		Maite_Morale	A Difficult(y) Choice (BOI21_books)	C++14	0 / 100	1 ms	600 KiB

books

#include <bits/stdc++.h>
using namespace std;
typedef long long ll ;
#define vll vector<ll>
#define vi vector<int>

long long skim(int);
void answer(std::vector<int>);
void impossible();
void solve(int n, int k, long long A, int S) {
    vi v(n+5,0),knowed,r={};ll s=0;
    for(int i=1;i<=k;i++){
        r.push_back(i);
        v[i]=skim(i);s+=v[i];
    }
    if(s>2*A){
        impossible();
        return;
    }
    ll last=n+1;
    for(int i=k;i>0;i--){
        s-=v[i];
        ll p=i,f=last;
        while(abs(p-f)!=1){
            ll md=(p+f)/2;
            if(v[md]==0)v[md]=skim(md);
            if(s+v[md]<A)p=md;
            else if(s+v[md]>2*A)f=md;
                 else{
                    r[i-1]=md;
                    answer(r);
                    return;
                 }
        }//for(auto x : r)cout<<x<<" ";cout<<"\n";
        r[i-1]=p;
        s+=v[p];
        last=p;
    }
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