Submission #1146319

#	Time	Username	Problem	Language	Result	Execution time	Memory
1146319		SmuggingSpun	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++20	0 / 100	0 ms	328 KiB

Main

#include<bits/stdc++.h>
#define taskname "A"
using namespace std;
typedef long long ll;
const ll INF = 1e18;
template<class T>void minimize(T& a, T b){
	if(a > b){
		a = b;
	}
}
int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	if(fopen(taskname".inp", "r")){
		freopen(taskname".inp", "r", stdin);
	}
	int n, x;
	cin >> n;
	vector<int>d;
	for(int i = 0, pre = 0; i < n; i++, pre = x){
		cin >> x;
		d.emplace_back(x - pre);
	}
	d.emplace_back(-x);
	ll neg = 0, pos = 0, ans = INF;
	for(int& x : d){
		pos += max(0, x + 1);
	}
	for(int i = 0; i < n; i++){
		pos -= max(0, d[i] + 1);
		neg -= min(0, d[i] - 1);
		minimize(ans, pos + neg);
	}
	cout << ans;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:14:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |                 freopen(taskname".inp", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

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