제출 #1320469

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1320469		resululubeyov	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++20	100 / 100	16 ms	5056 KiB

Main

#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;

#define endl '\n'
#define int long long
#define F first
#define S second
#define pii pair<int, int>
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define yes() cout << "YES" << endl
#define no() cout << "NO" << endl
#define gcd __gcd

int lcm(int a, int b){
    return a / gcd(a , b) * b;
}
bool isPalindrome(string s){
    string x = s;
    reverse(x.begin(), x.end());
    return x == s;
}
bool isPrime(int n){
    if(n < 2) return false;
    if(n == 2) return true;
    if(n % 2 == 0) return false;
    for(int i = 3;i <= sqrt(n);i += 2){
        if(n % i == 0) return false;
    }
    return true;
}
int dx[] = {1, -1, 0, 0};
int dy[] = {0, 0, 1, -1};
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
signed main() {
    //freopen("input.txt","r",stdin);
    //freopen("output.txt","w",stdout);

    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    
    int n;
    cin >> n;
    int arr[n + 1];
    for(int i = 1;i <= n;i++){
        cin >> arr[i];
    }
    int pref[n + 1], suf[n + 1];
    pref[1] = 0;
    suf[n] = 0;
    for(int i = 2;i <= n;i++) pref[i] = pref[i - 1] + max(0LL, 1 - (arr[i] - arr[i - 1]));
    for(int i = n - 1;i >= 1;i--) suf[i] = suf[i + 1] + max(0LL, 1 - (arr[i] - arr[i + 1]));
    int ans = LLONG_MAX;
    for(int i = 1;i <= n;i++){
        int x = max(pref[i], suf[i]);
        ans = min(ans, x);
    }
    cout << ans << endl;
}

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