Submission #861226

#	Time	Username	Problem	Language	Result	Execution time	Memory
861226		nasir_bashirov	Rice Hub (IOI11_ricehub)	C++11	100 / 100	10 ms	3924 KiB

ricehub

#include <bits/stdc++.h>
#include "ricehub.h"
using namespace std;

#define db long double
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define vi vector<int>
#define vl vector<ll>
#define vii vector<pii>
#define vll vector<pll>
#define endl '\n'
#define all(x) x.begin(), x.end()
#define fastio\
    ios_base::sync_with_stdio(0);\
    cin.tie(0);\
    cout.tie(0)\

ll pre[100005];

int besthub(int n, int m, int a[], long long c){
    for(int i = 1; i <= n; i++){
        pre[i] = pre[i - 1] + a[i - 1];
    }
    ll l = 1, r = n, res = 0;
    while(l <= r){
        ll mid = (l + r) / 2, f = 0;
        for(ll i = 1; i <= n; i++){
            if(i + mid - 1 > n)   break;
            ll midd = (i + i + mid - 1) / 2;
            ll cost = -(pre[midd] - pre[i - 1]) + a[midd] * (midd - i + 1) + (pre[i + mid - 1] - pre[midd]) - (i + mid - 1 - midd) * a[midd];
            if(cost <= c){
                f = 1;
            }
        }
        if(f){
            res = mid;
            l = mid + 1;
        }
        else{
            r = mid - 1;
        }
    }
    return res;
}

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