Submission #702169

#	Time	Username	Problem	Language	Result	Execution time	Memory
702169		nicky4321	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	100 / 100	29 ms	5452 KiB

Main

//#pragma GCC optimize("Ofast,no-stack-protector")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
#include<bits/stdc++.h>
#define ll long long
#define ld long double
#define F first
#define S second
#define PB push_back
#define pii pair<int, int>
#define pll pair<ll, ll>
#define pdd pair<double, double>
#define ALL(x) x.begin(), x.end()
#define SZ(x) (int)x.size()
#define vi vector<int>
#define vl vector<ll>
#define CASE int t;cin>>t;for(int ca=1;ca<=t;ca++)
#define IOS ios_base::sync_with_stdio(false); cin.tie(0);
using namespace std;
const int MAX = 1 << 20, MOD = 1e9 + 7;
ll a[MAX], back[MAX];

void solve(){
    int n;
    cin >> n;
    int mx = 0, id = 0;
    for(int i = 1;i <= n;i++){
        cin >> a[i];
    }
    for(int i = n;i >= 1;i--){
        back[i] = back[i + 1] + max(0LL, a[i + 1] + 1 - a[i]);
    }
    ll ans = 2e18, now = 0;
    for(int i = 1;i <= n;i++){
        now += max(0LL, a[i - 1] + 1 - a[i]);
        ans = min(ans, max(now, back[i]));
    }
    cout << ans << '\n';
}

int main(){
    IOS
	// CASE
	    solve();
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'void solve()':
Main.cpp:25:9: warning: unused variable 'mx' [-Wunused-variable]
   25 |     int mx = 0, id = 0;
      |         ^~
Main.cpp:25:17: warning: unused variable 'id' [-Wunused-variable]
   25 |     int mx = 0, id = 0;
      |                 ^~

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