Submission #975641

#	Time	Username	Problem	Language	Result	Execution time	Memory
975641		Isam	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	22 ms	7104 KiB

Main

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

#define eb emplace_back
#define all(x) x.begin(), x.end()
#define int long long

constexpr int sz = 2e5 + 5;

int n, a[sz], pref[sz], suff[sz];

int ans = (int)1E18 + 7;

signed main(){
	ios_base::sync_with_stdio(0), cin.tie(0);
	cin >> n;
	for(register int i = 1; i <= n; ++i){
		cin >> a[i];
	}
	
	for(register int i = 1; i <= n; ++i){
		pref[i] = pref[i-1] + max(0ll, a[i-1] - a[i] + 1);
	}
	
	for(register int i = n; i >= 1; --i){
		suff[i] = suff[i+1] + max(0ll, a[i+1] - a[i] + 1);
	}
	
	for(register int i = 1; i <= n; ++i){
		ans = min(ans, max(pref[i], suff[i]));
	}
	
	cout << ans << '\n';
	
	
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:17:19: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   17 |  for(register int i = 1; i <= n; ++i){
      |                   ^
Main.cpp:21:19: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   21 |  for(register int i = 1; i <= n; ++i){
      |                   ^
Main.cpp:25:19: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   25 |  for(register int i = n; i >= 1; --i){
      |                   ^
Main.cpp:29:19: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   29 |  for(register int i = 1; i <= n; ++i){
      |                   ^

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