Submission #1187920

#	Time	Username	Problem	Language	Result	Execution time	Memory
1187920		yhx3	Stone Arranging 2 (JOI23_ho_t1)	C++20	35 / 100	139 ms	2268 KiB

Main

#include <iostream>
#include <bits/stdc++.h>
#include <iomanip>
#include <numeric>
 
using namespace std;
 
#define ll long long
 
bool comp(const pair<int,int> &a,pair<int,int> &vl)
{
    return a.second > vl.first;
}
 
bool scomp(const pair<int,int> &a,pair<int,int> &vl)
{
    return a.first >= vl.first;
}
 

void solve() {
    int n;
    cin >> n;
    vector<int> a(n);
    int mx = 0;
    for (int i = 0; i < n; i++)
    {
        cin >> a[i];
        mx = max(mx,a[i]);
    }
    
    vector<int> ans(n);
    if (mx <= 2) {
        if (a[0] == 1) {
            bool ok = false;
            for (int i = n - 1; i >= 0; i--)
            {
                if (ok) {
                    ans[i] = 1;
                    continue;
                }
                if (a[i] == 1){
                    ans[i] = 1;
                    ok = true;
                } else {
                    ans[i] = 2;
                }
            }
        } else {
            bool ok = false;
            for (int i = n - 1; i >= 0; i--)
            {
                if (ok) {
                    ans[i] = 2;
                    continue;
                }
                if (a[i] == 2){
                    ans[i] = 2;
                    ok = true;
                } else {
                    ans[i] = 1;
                }
            }
        }
    } else {
        map<int,int> mp;
        for (int i = 0; i < n; i++)
        {
            if (mp.find(a[i]) != mp.end() && mp[a[i]] != -1) {
                for (int j = i - 1; j > mp[a[i]]; j--)
                {
                    mp[a[j]] = -1;
                    ans[j] = a[i];
                }
                for (int j = 0; j < mp[a[i]]; j++)
                {
                    mp[a[j]] = j;
                }
                mp[a[i]] = i;
                ans[i] = a[i];
            } else {
                mp[a[i]] = i;
                ans[i] = a[i];
            }
        }
        
    }
    for (int i = 0; i < n; i++)
    {
        cout << ans[i] << endl;
    }
    
}

int main() {
    int t = 1;
    // cin>>t;

    while(t--) {
        solve();
    }
    return 0;

}

• Subtask 1: 0 / 25
• Subtask 2: 35 / 35
• Subtask 3: 0 / 40