Submission #1222161

#	Time	Username	Problem	Language	Result	Execution time	Memory
1222161		_Knyaz_	Stove (JOI18_stove)	C++20	100 / 100	13 ms	1864 KiB

stove

///Bismillahir Rohmanir Rohim
#include <bits/stdc++.h>
using namespace std;
#define ff first
#define sc second
#define int int64_t
#define ll __uint128_t
#define sz(x) long((x).size())
#define all(x) (x).begin(), (x).end()
const int mod = 1e9+7;
const double PI = acos( -1. );
void in(){
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
}
void solve(){
    int N, K, sum; cin >> N >> K; sum = N;
    vector<int> vec(N), pre(N-1);
    for(int i = 0; i < N; i++){
        int T; cin >> T; vec[i] = T;
    }
    for(int i = 1; i < N; i++) pre[i-1] = vec[i] - vec[i-1] - 1;
    sort(all(pre));
    for(int i = 0; i < N - K; i++) sum += pre[i];
    cout << sum;
}
signed main(){
    //in();
    cin.tie(0)->sync_with_stdio(0);
    int t; t = 1;
    //cin >> t;
    while(t--) solve();
}
/*
        ██╗  ██╗███╗   ██╗██╗   ██╗ █████╗ ███████╗
        ██║ ██╔╝████╗  ██║╚██╗ ██╔╝██╔══██╗╚══███╔╝
        █████╔╝ ██╔██╗ ██║ ╚████╔╝ ███████║  ███╔╝
        ██╔═██╗ ██║╚██╗██║  ╚██╔╝  ██╔══██║ ███╔╝
███████╗██║  ██╗██║ ╚████║   ██║   ██║  ██║███████╗███████╗
╚══════╝╚═╝  ╚═╝╚═╝  ╚═══╝   ╚═╝   ╚═╝  ╚═╝╚══════╝╚══════╝
*/

Compilation message (stderr)

stove.cpp: In function 'void in()':
stove.cpp:13:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |     freopen("input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
stove.cpp:14:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |     freopen("output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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