제출 #544533

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
544533		SavicS	쌀 창고 (IOI11_ricehub)	C++17	100 / 100	13 ms	2900 KiB

ricehub

#include "ricehub.h"
 
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <bits/stdc++.h>
 
#define fi first
#define se second
#define pb push_back
#define sz(a) (int)a.size()
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define ff(i,a,b) for(int i=a;i<=b;i++)
#define fb(i,b,a) for(int i=b;i>=a;i--)
 
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
typedef pair<int,int> pii;
const int maxn = 100005;
const int inf = 1e9 + 5;
 
template<typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
 
// os.order_of_key(k) the number of elements in the os less than k
// *os.find_by_order(k)  print the k-th smallest number in os(0-based)
 
int n, m;
ll b;
int niz[maxn];
 
ll pref[maxn];
 
bool check(int x) {
 
    {
        int id = (1 + x) / 2;
        ll zbirL = niz[id] * (id - 1) - pref[id - 1];
        ll zbirR = pref[x] - pref[id] - niz[id] * (x - id);
 
        if(zbirL + zbirR <= b)return 1;
    }
 
 
    ff(i,x + 1, n) {
 
        int id = (i + i - x + 1) / 2;
        ll zbirL = niz[id] * (id - (i - x + 1)) - (pref[id - 1] - pref[i - x]);
        ll zbirR = pref[i] - pref[id] - niz[id] * (i - id);
 
        if(zbirL + zbirR <= b)return 1;
 
    }
 
    return 0;
 
}
 
int besthub(int R, int L, int X[], ll B) {
    n = R, m = L, b = B;
    ff(i,1,n)niz[i] = X[i - 1];
 
    ff(i,1,n)pref[i] = pref[i - 1] + niz[i];
 
    int l = 1, r = n, ans = 0;
    while(l <= r) {
        int mid = (l + r) / 2;
        if(check(mid)) {
            l = mid + 1;
            ans = mid;
        } else r = mid - 1;
    }
 
    return ans;
}
 
//int main()
//{
//      ios::sync_with_stdio(false);
//      cout.tie(nullptr);
//      cin.tie(nullptr);
//  cin >> n >> m >> b;
//  ff(i,1,n)cin >> niz[i];
//
//  ff(i,1,n)pref[i] = pref[i - 1] + niz[i];
//
//  int l = 1, r = n, ans = 0;
//  while(l <= r){
//      int mid = (l + r) / 2;
//      if(check(mid)){
//          l = mid + 1;
//          ans = mid;
//      }
//      else r = mid - 1;
//  }
//
//  cout << ans << endl;
//
//      return 0;
//}
///**
//
//5 20 6
//1 2 10 12 14
//
//// probati bojenje sahovski ili slicno
//
//**/
 
 

• Subtask 1: 17 / 17
• Subtask 2: 25 / 25
• Subtask 3: 26 / 26
• Subtask 4: 32 / 32