제출 #1283313

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1283313		kawevn	Stove (JOI18_stove)	C++17	100 / 100	14 ms	1480 KiB

stove

#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define fi first
#define se second
#define ll int
#define all(x) (x).begin(),(x).end()
using namespace std;
const int N = 1e5 + 5;
const int mod = 1e9 + 7;
ll a[N],n,k;
vector<ll>v;
void solve()
{
    cin >> n >> k;
    for(int i = 1; i <= n ; i++) cin >> a[i];
    ll ans = a[n] + 1 - a[1];
    for(int i = 2; i <= n ; i++) v.pb(a[i] - a[i-1] - 1);
    sort(v.begin(),v.end());
    int cnt = 0;
    for(int i = v.size() - 1 ; i >= 0 ; i--){
        if(cnt == k - 1) break;
        cnt++;
        ans -= v[i];
    }
    cout << ans << '\n';
}

signed main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    // freopen("test.inp","r",stdin);
    // freopen("test.out","w",stdout);
    solve();
}

컴파일 시 표준 에러 (stderr) 메시지

stove.cpp:6: warning: "ll" redefined
    6 | #define ll int
      | 
stove.cpp:2: note: this is the location of the previous definition
    2 | #define ll long long
      |

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