제출 #1226340

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1226340		lamlamlam	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++20	100 / 100	23 ms	4936 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n'
#define task "sus"
const int MN = 2e5+5,inf = 1e18;
int n,a[MN],l[MN],r[MN];

signed main()
{
    ios_base::sync_with_stdio(false);
    cin.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];
    int cur = 0,ans = inf;
    for(int i=1; i<=n; i++) {
        if(a[i]<=a[i-1]) cur += a[i-1] - a[i] + 1;
        l[i] = cur;
    }
    cur = 0;
    for(int i=n-1; i>=1; i--){
        if(a[i]<=a[i+1]) cur += a[i+1] - a[i] + 1;
        r[i] = cur;
    }
    for(int i=1; i<=n; i++) ans = min(ans,max(l[i],r[i]));
    cout << ans;
    cerr << "\nTIME: " << clock() << '\n';
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:14:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |         freopen(task".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
Main.cpp:15:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |         freopen(task".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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