제출 #1282205

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1282205		KickingKun	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++20	100 / 100	17 ms	4332 KiB

Main

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

#define ll long long
#define ull unsigned long long
#define ld long double
#define bigint __int128
#define emb emplace_back
#define pb push_back
#define pii pair <int, int>
#define fi first
#define se second
#define all(v) v.begin(), v.end()
#define Task ""

#define MASK(k) (1ull << k)
#define bitcnt(k) __builtin_popcount(k)
#define testBit(n, k) ((n >> k) & 1)
#define flipBit(n, k) (n ^ (1ll << k))
#define offBit(n, k) (n & ~MASK(k))
#define onBit(n, k) (n | (1ll << k))

template <class T> bool minimize(T &a, T b) {if (a > b) {a = b; return true;} return false;}
template <class T> bool maximize(T &a, T b) {if (a < b) {a = b; return true;} return false;}

const int N = 2e5 + 5, lim = 60, mod = 1e9 + 7;
const ll INF = 1e18;

int n, a[N];
ll dpL[N], dpR[N];

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

	if (fopen(Task".inp", "r")) {
		freopen(Task".inp", "r", stdin);
		freopen(Task".out", "w", stdout);
	}

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

	for (int i = 1; i <= n; i++)
		dpL[i] = dpL[i - 1] + max(0, a[i - 1] + 1 - a[i]);

	for (int i = n; i > 0; i--)
		dpR[i] = dpR[i + 1] + max(0, a[i + 1] + 1 - a[i]);

	// thao tac luon la [l, dinh] / [dinh, r]
	// -> noi 2 thao tac bat ki [l, r]

	ll ans = INF;
	for (int i = 1; i <= n; i++)
		minimize(ans, max(dpL[i], dpR[i]));
	cout << ans;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:36:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |                 freopen(Task".inp", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:37:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |                 freopen(Task".out", "w", stdout);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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