oj.uz

Submission #703808

# Submission time Handle Problem Language Result Execution time Memory
703808 2023-02-28T12:27:26 Z weakweakweak Volontiranje (COCI21_volontiranje) C++14
0 / 110
 625 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 33 ms 71372 KB Output is correct
2 Correct 33 ms 71380 KB Output is correct
3 Correct 36 ms 71516 KB Output is correct
4 Correct 33 ms 71372 KB Output is correct
5 Correct 33 ms 71372 KB Output is correct
6 Correct 33 ms 71444 KB Output is correct
7 Correct 36 ms 71428 KB Output is correct
8 Correct 38 ms 71380 KB Output is correct
9 Correct 34 ms 71508 KB Output is correct
10 Correct 40 ms 71472 KB Output is correct
11 Correct 36 ms 71444 KB Output is correct
12 Correct 34 ms 71500 KB Output is correct
13 Correct 34 ms 71488 KB Output is correct
14 Correct 33 ms 71372 KB Output is correct
15 Correct 32 ms 71372 KB Output is correct
16 Correct 36 ms 71492 KB Output is correct
17 Runtime error 625 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 33 ms 71372 KB Output is correct
2 Correct 33 ms 71380 KB Output is correct
3 Correct 36 ms 71516 KB Output is correct
4 Correct 33 ms 71372 KB Output is correct
5 Correct 33 ms 71372 KB Output is correct
6 Correct 33 ms 71444 KB Output is correct
7 Correct 36 ms 71428 KB Output is correct
8 Correct 38 ms 71380 KB Output is correct
9 Correct 34 ms 71508 KB Output is correct
10 Correct 40 ms 71472 KB Output is correct
11 Correct 36 ms 71444 KB Output is correct
12 Correct 34 ms 71500 KB Output is correct
13 Correct 34 ms 71488 KB Output is correct
14 Correct 33 ms 71372 KB Output is correct
15 Correct 32 ms 71372 KB Output is correct
16 Correct 36 ms 71492 KB Output is correct
17 Runtime error 625 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 33 ms 71372 KB Output is correct
2 Correct 33 ms 71380 KB Output is correct
3 Correct 36 ms 71516 KB Output is correct
4 Correct 33 ms 71372 KB Output is correct
5 Correct 33 ms 71372 KB Output is correct
6 Correct 33 ms 71444 KB Output is correct
7 Correct 36 ms 71428 KB Output is correct
8 Correct 38 ms 71380 KB Output is correct
9 Correct 34 ms 71508 KB Output is correct
10 Correct 40 ms 71472 KB Output is correct
11 Correct 36 ms 71444 KB Output is correct
12 Correct 34 ms 71500 KB Output is correct
13 Correct 34 ms 71488 KB Output is correct
14 Correct 33 ms 71372 KB Output is correct
15 Correct 32 ms 71372 KB Output is correct
16 Correct 36 ms 71492 KB Output is correct
17 Runtime error 625 ms 524288 KB Execution killed with signal 9
18 Halted 0 ms 0 KB -