Submission #1072787

#	Time	Username	Problem	Language	Result	Execution time	Memory
1072787		HappyCapybara	Global Warming (CEOI18_glo)	C++17	0 / 100	118 ms	7764 KiB

glo

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

int n;
vector<int> st;

void update(int pos, int val, int node=1, int tl=0, int tr=n-1){
    if (tl == tr){
        st[node] = val;
        return;
    }
    int tm = (tl+tr)/2;
    if (pos <= tm) update(pos, val, node*2, tl, tm);
    else update(pos, val, node*2+1, tm+1, tr);
    st[node] = max(st[node*2], st[node*2+1]);
}

int query(int l, int r, int node=1, int tl=0, int tr=n-1){
    if (l <= tl && tr <= r) return st[node];
    int tm = (tl+tr)/2;
    int res = 0;
    if (l <= tm) res = max(res, query(l, r, node*2, tl, tm));
    if (tm+1 <= r) res = max(res, query(l, r, node*2+1, tm+1, tr));
    return res;
}

int main(){
    int x;
    cin >> n >> x;
    vector<int> v(n);
    for (int i=0; i<n; i++) cin >> v[i];
    st.resize(4*n, 0);

    vector<pair<int,int>> p(n);
    for (int i=0; i<n; i++) p[i] = {v[i], -i};

    sort(p.begin(), p.end());

    for (int i=n-1; i>=0; i--){
        int j = -p[i].second;
        int bsf = query(0, j);
        update(j, bsf+1);
    }

    cout << st[1] << "\n";
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 13
• Subtask 4: 0 / 10
• Subtask 5: 0 / 20
• Subtask 6: 0 / 17
• Subtask 7: 0 / 25