제출 #466106

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
466106		pdstiago	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	0 / 100	0 ms	204 KiB

Main

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

#define MOD 1000000007
#define mxn 200005
#define mxm 105
#define f first
#define s second
#define pb push_back
#define es " "
#define endl '\n'
#define INF 0x3f3f3f3f
#define INFL 0x3f3f3f3f3f3f3f3f
#define ll long long
#define fastio ios_base::sync_with_stdio(0), cin.tie(0)
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
typedef pair<string, string> pii;
typedef pair<int, pii> pip;

int n, v[mxn], ma, pos, pos2, pos3;
ll need[mxn], resp, atual;

int main(){
    fastio;
    cin >> n;
    for(int i=1; i<=n; i++){
        cin >> v[i];
        if(v[i]>=ma){
            ma=v[i];
            pos=i;
        }
    }
    for(int i=n; i>=pos; i--){
        if(v[i]<=v[i+1]+need[i+1]){
            need[i]=(v[i+1]+need[i+1])-v[i]+1;
        }
    }
    for(int i=1; i<=pos; i++){
        if(v[i]<=v[i-1]+need[i-1]){
            need[i]=(v[i-1]+need[i-1])-v[i]+1;
        }
    }
    pos2=1, pos3=n;
    for(int i=pos-1; i>=1; i--){
        if(need[i]){
            pos2=i;
            break;
        }
    }
    for(int i=pos+1; i<=n; i++){
        if(need[i]){
            pos3=i;
            break;
        }
    }
    for(int i=1; i<pos2; i++){
        if(!need[i]){
            resp+=atual;
            atual=0;
        }
        atual=max(atual, need[i]);
    }
    resp+=atual;
    atual=0;
    for(int i=pos2; i<=pos3; i++){
        if(!need[i]){
            resp+=atual;
            atual=0;
        }
        atual=max(atual, need[i]);
    }
    resp+=atual;
    atual=0;
    for(int i=pos3+1; i<=n; i++){
        if(!need[i]){
            resp+=atual;
            atual=0;
        }
        atual=max(atual, need[i]);
    }
    resp+=atual;
    cout << resp;
    return 0;
}

• Subtask 1: 0 / 40
• Subtask 2: 0 / 60