Submission #729418

#	Time	Username	Problem	Language	Result	Execution time	Memory
729418		abcvuitunggio	Stone Arranging 2 (JOI23_ho_t1)	C++17	100 / 100	100 ms	8756 KiB

Main

#include <bits/stdc++.h>
using namespace std;
int n,a[200001],p[200001],r[200001],sz[200001],pos[200001];
vector <int> ve;
int f(int i){
    return (p[i]==i?i:p[i]=f(p[i]));
}
void unite(int i, int j){
    i=f(i);
    j=f(j);
    if (sz[i]<sz[j])
        swap(i,j);
    p[j]=i;
    sz[i]+=sz[j];
    pos[a[min(r[i],r[j])]]=-1;
    pos[a[max(r[i],r[j])]]=r[j];
    r[i]=max(r[i],r[j]);
}
int main(){
    ios_base::sync_with_stdio(NULL);cin.tie(nullptr);
    cin >> n;
    for (int i=1;i<=n;i++){
        cin >> a[i];
        p[i]=r[i]=i;
        sz[i]=1;
        ve.push_back(a[i]);
    }
    memset(pos,-1,sizeof(pos));
    sort(ve.begin(),ve.end());
    ve.resize(unique(ve.begin(),ve.end())-ve.begin());
    for (int i=1;i<=n;i++){
        a[i]=lower_bound(ve.begin(),ve.end(),a[i])-ve.begin();
        if (pos[a[i]]==-1){
            pos[a[i]]=i;
            continue;
        }
        int j=pos[a[i]];
        while (j<i){
            j=r[f(j)];
            unite(j,j+1);
            j++;
        }
    }
    for (int i=1;i<=n;i++)
        cout << ve[a[r[f(i)]]] << '\n';
}

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