Submission #1049737

#	Time	Username	Problem	Language	Result	Execution time	Memory
1049737		vjudge1	Stove (JOI18_stove)	C++17	20 / 100	210 ms	600 KiB

stove

#include <bits/stdc++.h>

#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,lzcnt,mmx,abm,avx,avx2,fma")
#pragma GCC optimize("Ofast,unroll-loops,no-stack-protector,fast-math,inline")

using namespace std;

#define speed ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0)
#define vc vector
#define mp make_pair
#define pb push_back
#define fi first
#define se second
#define ll long long
#define all(x) x.begin(),x.end()
#define sz(x) (int)x.size()

const int N = 1e5 + 5;
const int M = 1e5 + 5;
const int mod = 1e9 + 7;
const int block = 500;

int n, k, a[N];
bool col[N];

void solve() {
	cin >> n >> k;
    for ( int i = 1; i <= n; i++ ) {
        cin >> a[i];
        col[a[i]] = 1;
    }
    int res = 21;
    for ( int i = 0; i < (1<<20); i++ ) {
        vc <bool> used(21,0);
        int cnt = 0, ok = 1;
        for ( int j = 0; j < 20; j++ ) {
            if ( ( i >> j ) & 1 ) {
                used[j+1] = 1;
                cnt++;
            }
        }
        int k2 = 0;
        for ( int j = 1; j <= 20; j++ ) {
            if ( used[j] ) {
                if ( !used[j-1] ) k2++;
            }
            else {
                if ( col[j] ) ok = 0;
            }
        }
        if ( ok && k2 <= k ) res = min(res,cnt);
    }
    cout << res;
}

signed main() {
	speed;
	int tt;
	//cin >> tt;
    tt = 1;
	while ( tt-- ) {
		solve();
		cout << '\n';
	}
}

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