oj.uz

Submission #703809

# Submission time Handle Problem Language Result Execution time Memory
703809 2023-02-28T12:28:13 Z weakweakweak Volontiranje (COCI21_volontiranje) C++14
0 / 110
 566 ms 524288 KB 
#include <bits/stdc++.h>
using namespace std;

#define fs first
#define sc second
#define pii pair<int,int>

const int N=1010000;
int a[N], fr[N], n, lb[N];
vector<int>lis={INT_MAX}, v;
vector<pii> lv[N];
vector<vector<int>>ans;
set<int>st[N];
bool dead[N]={0};

#pragma GCC optimize("Ofast")

bool dfs(int i, int t){
    if(dead[i])return 0;
    v.push_back(i);
    if(t==1)return 1;
    auto it=st[t-1].lower_bound(lb[i]), it2=st[t-1].lower_bound(i);
    if(it==it2||it==st[t-1].end()){
        dead[i]=1;
        return 0;
    }
    vector<int>err;
    while(it!=it2){
        if(dfs(*it, t-1)){
           // for(int x:err)st[t-1].erase(x);
            return 1;}
        err.push_back(*it);
        it=it++;
    }
    for(int x:err)st[t-1].erase(x);
    v.pop_back();
    dead[i]=1;
    return 0;
}

int main(){
    ios_base::sync_with_stdio(false); cin.tie(0);
    cin >> n;
    for(int i=1; i<=n; i++){
        cin >> a[i];
        auto it=lower_bound(lis.begin(), lis.end(), a[i]);
        if(it==lis.end())lis.push_back(a[i]), fr[i]=lis.size();
        else lis[it-lis.begin()]=a[i], fr[i]=it-lis.begin()+1;
        st[fr[i]].insert(i); lv[fr[i]].push_back({a[i],i});
        if(fr[i]==1)continue;
        int l=0, r=lv[fr[i]-1].size()-1;
        while(l<r){
            int mid=(l+r)/2;
            if(lv[fr[i]-1][mid].fs < a[i])r=mid;
            else l=mid+1;
        }
        lb[i]=min(lv[fr[i]-1][l].sc,i);
    }

    for(auto i:st[lis.size()]){
        v.resize(0);
        if(dfs(i, lis.size())){
            if(v.size()!=lis.size())continue;
            reverse(v.begin(), v.end());
            ans.push_back(v);
            for(int i=0; i<v.size()-1; i++)st[i+1].erase(v[i]);
        }
    }

    cout << ans.size() << ' ' << lis.size() << '\n';
    for(auto v:ans){
        for(int x:v)cout << x << ' ';
        cout << '\n';
    }
return 0;}

/*
1 1 2 1 1 3 2 2 3 2 3 1 3 2 3
*/

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:66:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |             for(int i=0; i<v.size()-1; i++)st[i+1].erase(v[i]);
      |                          ~^~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 71504 KB Output is correct
2 Correct 32 ms 71500 KB Output is correct
3 Correct 33 ms 71432 KB Output is correct
4 Correct 33 ms 71460 KB Output is correct
5 Correct 33 ms 71420 KB Output is correct
6 Correct 33 ms 71504 KB Output is correct
7 Correct 33 ms 71480 KB Output is correct
8 Correct 32 ms 71444 KB Output is correct
9 Correct 37 ms 71468 KB Output is correct
10 Correct 33 ms 71444 KB Output is correct
11 Correct 33 ms 71376 KB Output is correct
12 Correct 40 ms 71404 KB Output is correct
13 Correct 32 ms 71484 KB Output is correct
14 Correct 32 ms 71508 KB Output is correct
15 Correct 39 ms 71488 KB Output is correct
16 Correct 33 ms 71372 KB Output is correct
17 Runtime error 566 ms 524288 KB Execution killed with signal 9
18 Halted 0 ms 0 KB -

Subtask #2
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 71504 KB Output is correct
2 Correct 32 ms 71500 KB Output is correct
3 Correct 33 ms 71432 KB Output is correct
4 Correct 33 ms 71460 KB Output is correct
5 Correct 33 ms 71420 KB Output is correct
6 Correct 33 ms 71504 KB Output is correct
7 Correct 33 ms 71480 KB Output is correct
8 Correct 32 ms 71444 KB Output is correct
9 Correct 37 ms 71468 KB Output is correct
10 Correct 33 ms 71444 KB Output is correct
11 Correct 33 ms 71376 KB Output is correct
12 Correct 40 ms 71404 KB Output is correct
13 Correct 32 ms 71484 KB Output is correct
14 Correct 32 ms 71508 KB Output is correct
15 Correct 39 ms 71488 KB Output is correct
16 Correct 33 ms 71372 KB Output is correct
17 Runtime error 566 ms 524288 KB Execution killed with signal 9
18 Halted 0 ms 0 KB -

Subtask #3
0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 71504 KB Output is correct
2 Correct 32 ms 71500 KB Output is correct
3 Correct 33 ms 71432 KB Output is correct
4 Correct 33 ms 71460 KB Output is correct
5 Correct 33 ms 71420 KB Output is correct
6 Correct 33 ms 71504 KB Output is correct
7 Correct 33 ms 71480 KB Output is correct
8 Correct 32 ms 71444 KB Output is correct
9 Correct 37 ms 71468 KB Output is correct
10 Correct 33 ms 71444 KB Output is correct
11 Correct 33 ms 71376 KB Output is correct
12 Correct 40 ms 71404 KB Output is correct
13 Correct 32 ms 71484 KB Output is correct
14 Correct 32 ms 71508 KB Output is correct
15 Correct 39 ms 71488 KB Output is correct
16 Correct 33 ms 71372 KB Output is correct
17 Runtime error 566 ms 524288 KB Execution killed with signal 9
18 Halted 0 ms 0 KB -