제출 #1017345

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
1017345	2024-07-09 07:30:57	nathan4690	Feast (NOI19_feast)	C++17	22 / 100	125 ms	18156 KiB

feast

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// NOI19 Task 3: Feast
// https://oj.uz/problem/view/NOI19_feast
#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define el cout << '\n'
#define f1(i,n) for(ll i=1;i<=n;i++)
#define __file_name ""
using namespace std;
const ll maxn = 1e6+5, inf=1e18;
ll n,k,a[maxn],b[maxn],L,R,mid;
pair<ll,ll> dp[2][maxn];
pair<ll,ll> check(ll lambda){
    // Penalty is lambda per subarray
    dp[1][0] = {-inf, 0};
    f1(i,n){
        dp[0][i] = max(dp[0][i-1], dp[1][i-1]);
        dp[1][i] = max(make_pair(dp[1][i-1].first + a[i], dp[1][i-1].second),
                       make_pair(dp[0][i-1].first + a[i] - lambda, dp[0][i-1].second + 1));
    }
    return max(dp[0][n], dp[1][n]);
}
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    if(fopen(__file_name ".inp", "r")){
        freopen(__file_name ".inp","r",stdin);
 
 
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컴파일 시 표준 에러 (stderr) 메시지

feast.cpp: In function 'int main()':
feast.cpp:30:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |         freopen(__file_name ".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
feast.cpp:31:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |         freopen(__file_name ".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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