제출 #706130

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
706130		pcc	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	100 / 100	28 ms	6588 KiB

Main

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

#define ll long long
const int mxn = 2e5+10;
ll arr[mxn],diff[mxn],pref[mxn],suf[mxn];

int main(){
    int n;
    ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin>>n;
    for(int i = 1;i<=n;i++){
        cin>>arr[i];
        if(i>1)diff[i] = arr[i]-arr[i-1];
    }
    for(int i = 2;i<=n;i++){
        pref[i] = pref[i-1]+(diff[i]<=0?1-diff[i]:0);
    }
    for(int i = n;i>=1;i--){
        suf[i] = suf[i+1]+(diff[i]>=0?diff[i]+1:0);
    }
    ll ans = 1e18;
    for(int i = 1;i<=n+1;i++){
        ans = min(ans,max(pref[i-1],suf[i]));
    }
    cout<<ans;
}

• Subtask 1: 40 / 40
• Subtask 2: 60 / 60