Submission #1154630

#	Time	Username	Problem	Language	Result	Execution time	Memory
1154630		Nurislam	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++20	0 / 100	0 ms	328 KiB

Main

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

//#define int long long
//#define all(x) x.begin(),x.end()
//#define rall(x) x.rbegin(),x.rend()
//#define ff first
//#define ss second
//#define pb push_back
//template<class T, class U> inline bool chmin(T& a, const U& b) { if (a > b) { a = b; return true; } return false; }
//template<class T, class U> inline bool chmax(T& a, const U& b) { if (a < b) { a = b; return true; } return false; }
//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
//#define rnd(l, r) uniform_int_distribution <int> (l, r)(rng)

const int inf = 1e6, mod = 1e9 + 7;

void solve(){
	int n;
	cin >> n;
	vector<int> a(n);
	for(int &i : a)cin >> i;
	
	int r = n-2, ad = 0, i = 1;
	
		while(r > 0){
			if(a[r] > a[r+1])r --;
			else break;
		}
	
	for(; i < n; i++ ){
		a[i] += ad;
		if(a[i] > a[i-1])continue;
		while(r > i){
			a[r] += ad;
			if(a[r] > a[r+1])r --;
			else break;
		}
		if(i > r)break;
		
		// > i ... r < 
		int df = a[i-1] - a[i] + 1;
		ad += df;
		a[i] += df;
	}
	if(r == i - 1 && a[i] == a[r])ad++;
	cout << ad << '\n';
	
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);cout.tie(nullptr);
    int tt = 1;
    //cin >> tt;
    while(tt--){
        solve();
    };
}

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