Submission #564135

#	Time	Username	Problem	Language	Result	Execution time	Memory
564135		OttoTheDino	Financial Report (JOI21_financial)	C++17	100 / 100	277 ms	29652 KiB

Main

#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()
#define len(a)                      (int)a.size()
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; cin >> n >> d;
    int a[n+1] = {};
    rep (i,1,n) cin >> a[i];
    set<ii> st;
    multiset<int> mi;
    a[0]= 1e9;
    rep (i,1,n) {
        mi.insert(a[i-1]);
        if (i-d-1>=0) mi.erase(mi.find(a[i-d-1]));
        while (len(st) && *mi.begin() > (*st.begin()).fi) st.erase(st.begin());
        auto it = st.lower_bound({a[i],0}); 
        if (it==st.end()) {
            if (it==st.begin()) st.insert({a[i], 1});
            else st.insert({a[i], (*--it).se+1});
        }
        else if ((*it).fi!=a[i]) {
            if (it==st.begin()) {
                if ((*it).se==1) st.erase(it);
                st.insert({a[i],1});
            }
            else {
                int x = (*--it).se+1;
                if ((*++it).se == x) st.erase(it);
                st.insert({a[i], x});
            }
        }
    }
    cout << (*st.rbegin()).se << "\n";

    return 0;
}

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 20 / 20
• Subtask 4: 12 / 12
• Subtask 5: 5 / 5
• Subtask 6: 35 / 35