Submission #522262

#	Time	Username	Problem	Language	Result	Execution time	Memory
522262		OttoTheDino	The short shank; Redemption (BOI21_prison)	C++17	10 / 100	331 ms	42008 KiB

prison

#include <bits/stdc++.h>
using namespace std;

#define rep(i,s,e)                  for (int i = s; i <= e; ++i)
#define rrep(i,s,e)                 for (int i = s; i >= e; --i)
#define pb                          push_back
#define pf                          push_front
#define fi                          first
#define se                          second
#define all(a)                      a.begin(), a.end()
typedef long long ll;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef vector<int> vi;
typedef vector<double> vd;
typedef vector<string> vs;
typedef vector<ll> vll;

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    int n, D, T; cin >> n >> D >> T;
    int t[n+2];
    rep (i,1,n) cin >> t[i];

    int cnt[n+1] = {}, cnt2[n+1] = {}, ans = 0;

    set<ii> st;
    set<int> st2;

    rep (i,1,n) {
        if (t[i]>T) {
            while (!st.empty() && (*st.begin()).fi < i) {
                int j = (*st.begin()).se;
                st.erase(st.begin());
                st2.erase(j);
            }
            if (st.empty()) ++ans;
            else {
                cnt[*st2.rbegin()]++;
                cnt2[i]++;
            }
        }
        else {
            st.insert({i+T-t[i],i});
            st2.insert(i);
        }
    }
    
    int cur = 0, ans2 = 0;

    rep (i,1,n) {
        cur += cnt[i] - cnt2[i];
        ans2 = max (ans2, cur);
    }

    cout << n-ans-ans2 << "\n";

    return 0;
}

• Subtask 1: 0 / 15
• Subtask 2: 10 / 10
• Subtask 3: 0 / 20
• Subtask 4: 0 / 10
• Subtask 5: 0 / 25
• Subtask 6: 0 / 20