Submission #997846

#	Time	Username	Problem	Language	Result	Execution time	Memory
997846		faqinyeager	Stone Arranging 2 (JOI23_ho_t1)	C++17	100 / 100	210 ms	27048 KiB

Main

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

int n;
vector<int> t;

int F(vector<int>& a, int val){
    int l = 0, r = a.size() - 1, best = -1;
    while(l <= r){
        int mid = (l + r) / 2;
        if(a[mid] >= val){
            best = mid;
            r = mid - 1;
        }else{
            l = mid + 1;
        }
    }
    return a[best];
}


int main(){
    cin >> n;
    
    t.resize(n);

    map<int, vector<int>> tmp;

    for(int i = 0; i < n; i++){
        cin >> t[i];
        tmp[t[i]].push_back(i);
    }

    int ind = 0, val;

    while(ind < n){
        val = t[ind];
        vector<int> a = tmp[val];

        int start = F(a, ind);
        int end = a.back();
        
        //cout << start << ' ' << end << "; val - " << val << '\n';

        for(int i = start; i <= end; i++) cout << val << '\n';

        ind = end + 1;
    }
}

// 1 2 3 1 3 2 3 4 1 2 3 5 5 4
// 1 1 1 1 1 1 1 1 1 2 3 5 5 4

• Subtask 1: 25 / 25
• Subtask 2: 35 / 35
• Subtask 3: 40 / 40