제출 #699511

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
699511		Alihan_8	Stove (JOI18_stove)	C++17	50 / 100	121 ms	262144 KiB

stove

#include <bits/stdc++.h>
// include <ext/pb_ds/assoc_container.hpp>
// include <ext/pb_ds/tree_policy.hpp>
// using namespace __gnu_pbds;
using namespace std;
#define all(x) x.begin(), x.end()
#define pb push_back
// define ordered_set tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update>
#define mpr make_pair
#define ln '\n'
void IO(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
#define int long long
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int n, k; cin >> n >> k;
    vector <int> p(n);
    for ( auto &i: p ) cin >> i;
    const int inf = 1e16+1;
    vector <vector<int>> dp(n+1, vector <int> (k+1, inf));
    dp[1][1] = 1;
    for ( int i = 2; i <= n; i++ ){
        for ( int j = 1; j <= k; j++ ){
            dp[i][j] = min(dp[i-1][j-1]+1, dp[i-1][j]+(p[i-1]-p[i-2]));
        }
    }
    cout << dp[n][k];

	cout << '\n';
}

컴파일 시 표준 에러 (stderr) 메시지

stove.cpp: In function 'void IO(std::string)':
stove.cpp:11:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 | void IO(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
      |                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
stove.cpp:11:70: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 | void IO(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
      |                                                               ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 0 / 50