Submission #1241727

#	Time	Username	Problem	Language	Result	Execution time	Memory
1241727		eirinayukari	학생 (COCI14_studentsko)	C++20	100 / 100	2 ms	328 KiB

studentsko

// XD XD
#include <bits/stdc++.h>

#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define el cout << "\n";

using namespace std;
using ll = long long;

const int MAXN = 1e6 + 7;
const int MOD = 1e9 + 7;
const int INF = 1e9 + 7;
const ll LLINF = 1e18 + 7;

template <typename T>
bool ckmin(T& a, T b) {
    return a > b ? a = b, true : false;
}

template <typename T>
bool ckmax(T& a, T b) {
    return a < b ? a = b, true : false;
}

int n, k;
pair<int, int> a[MAXN];
void solve(int id) {
    // cout << "Case " << id << ": ";
    cin >> n >> k;
    for (int i = 1; i <= n; i++) {
        cin >> a[i].first;
        a[i].second = i;
    }

    sort(a + 1, a + n + 1);
    for (int i = 1; i <= n; i++) {
        a[i].first = (i - 1) / k + 1;
        swap(a[i].first, a[i].second);
    }

    sort(a + 1, a + n + 1);
    multiset<int> ms;
    for (int i = 1; i <= n; i++) {
        auto it = ms.upper_bound(a[i].second);
        if (it != ms.end()) {
            ms.erase(it);
        }
        ms.insert(a[i].second);
    }

    cout << n - ms.size() << "\n";
}
 
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
 
    int T = 1;
    // cin >> T;
    for (int i = 1; i <= T; i++) {
        solve(i);
    }
    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10