제출 #1158086

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1158086		nguyn	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++20	100 / 100	16 ms	4952 KiB

Main

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

#define int long long
#define ll long long 
#define F first
#define S second
#define pb push_back 
#define pii pair<int,int>

const int N = 2e5 + 5;

int n, a[N];
int pre[N], suf[N]; 

signed main(){
    ios_base::sync_with_stdio(false) ; 
    cin.tie(0) ; cout.tie(0) ; 
    if (fopen("INP.INP" ,"r")) {
        freopen("INP.INP" ,"r" , stdin) ;
        freopen("OUT.OUT" , "w" , stdout) ;
    }
    cin >> n;
    for (int i = 1; i <= n; i++) {
    	cin >> a[i]; 
    }
    for (int i = 2; i <= n; i++) {
    	pre[i] = pre[i - 1] + max(0ll, a[i - 1] - a[i] + 1); 
    }
    for (int i = n - 1; i >= 1; i--) {
    	suf[i] = suf[i + 1] + max(0ll, a[i + 1] - a[i] + 1); 
    }
    int res = 1e18; 
    for (int i = 1; i <= n; i++) {
    	res = min(res, max(pre[i], suf[i])); 
    }
    cout << res;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:20:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |         freopen("INP.INP" ,"r" , stdin) ;
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:21:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |         freopen("OUT.OUT" , "w" , stdout) ;
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

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