Submission #494794

#	Time	Username	Problem	Language	Result	Execution time	Memory
494794		ahmeteren	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	0 / 100	3 ms	336 KiB

Main

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

const int N = 1e5 + 5;

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);

	#ifndef ONLINE_JUDGE
		freopen("in.txt", "r", stdin);
		freopen("out.txt", "w", stdout);
	#endif

	long long n, cevap = 1e16;
	cin >> n;

	vector<long long> vec(n + 2), prefix(n + 1), suffix(n + 1);

	for(int i = 1; i <= n; i++)
		cin >> vec[i];

	for(int i = 2; i <= n; i++)
	{
		prefix[i] = prefix[i - 1];
		prefix[i] += max(0LL, (vec[i - 1] + 1) - vec[i]);
	}

	for(int i = n - 1; i > 0; i--)
	{
		suffix[i] = suffix[i + 1];
		suffix[i] += max(0LL, (vec[i + 1] + 1) - vec[i]);
	}

	prefix[1] = suffix[n] = 0;

	for(int i = 1; i <= n; i++)
	{
		cevap = min(cevap, max(prefix[i], suffix[i]));
	}

	cout << cevap << '\n';
	return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:12:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |   freopen("in.txt", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
Main.cpp:13:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |   freopen("out.txt", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

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