Submission #394319

#	Time	Username	Problem	Language	Result	Execution time	Memory
394319		Aryan_Raina	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	100 / 100	35 ms	6980 KiB

Main

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

#define int long long
#define ld long double
#define ar array
 
const int INF = 1e17;
const int MOD = 998244353;

int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie();
    int n; cin>>n;
    vector<int> a(n); for (int &i : a) cin>>i;
    vector<int> pf(n, 0), sf(n, 0);
    for (int i = 1; i < n; i++) pf[i] = pf[i-1] + max(a[i-1]-a[i]+1, 0LL);
    for (int i = n-2; i >= 0; i--) sf[i] = sf[i+1] + max(a[i+1]-a[i]+1, 0LL);
    int ans = INF;
    for (int i = 0; i < n; i++) {
        // keep pairing stuff on left and right and [l,r]++
        ans = min(ans,max(pf[i], sf[i]));
    }
    cout<<ans<<"\n";
} 

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