이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
#include "books.h"
#define all(x) (x).begin(), (x).end()
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<ll, ll> pll;
typedef pair<ull, ull> pull;
typedef pair<int, int> pii;
typedef pair<ld, ld> pld;
//
// --- Sample implementation for the task books ---
//
// To compile this program with the sample grader, place:
// books.h books_sample.cpp sample_grader.cpp
// in a single folder and run:
// g++ books_sample.cpp sample_grader.cpp
// in this folder.
//
void finish(deque<int> &ans){
vector<int> v;
for(auto u : ans)
v.pb(u);
answer(v);
}
void solve(int N, int K, long long A, int S) {
deque<int> ans;
deque<ll> val;
ll curval = 0;
for(ll i = 1; i <= K; ++i){
ans.pb(i);
val.pb(skim(i));
curval += val.back();
}
if(curval > 2*A){
impossible();
return;
}
if(curval >= A){
finish(ans);
return;
}
ll l = K+1, r = N;
while(l < r){
ll m = (l+r+1)/2;
if(curval-val[0]+skim(m) > 2*A)
r = m-1;
else
l = m;
}
for(ll i = l; i > K && curval < A; --i){
ll addval = skim(i);
if(addval <= val[0]) break;
ans.pop_front();
curval -= val[0];
val.pop_front();
ans.pb(i);
val.pb(addval);
curval += addval;
}
if(curval >= A && 2*A >= curval)
finish(ans);
else
impossible();
}
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