oj.uz

Submission #443146

# Submission time Handle Problem Language Result Execution time Memory
443146 2021-07-09T19:37:36 Z Abrar_Al_Samit Drvca (COCI19_drvca) C++17
110 / 110
 245 ms 6852 KB 
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
    
using namespace std;
using namespace __gnu_pbds;
    
    
#define debug(x) cerr << '[' << (#x) << "] = " << x << '\n';
    
template<class T> using ordered_set = tree<T, null_type , less<T> , rb_tree_tag , tree_order_statistics_node_update> ;
    
void PlayGround() {
    int N; cin >> N;
    vector<int>a(N);
    for(int i=0; i<N; ++i) cin >> a[i];
    sort(a.begin(), a.end());
    
    if(N < 4) {
        cout << 1 << '\n' << a[0] << '\n' << N-1 << '\n';
        for(int i=1; i<N; ++i) cout << a[i] << ' ';
        cout << '\n';
        return;
    }
    auto print = [] (vector<int>&x, vector<int>&y) {
        if(y.empty()) y.push_back(x.back()), x.pop_back();
        cout << x.size() << '\n';
        for(auto it : x) cout << it << ' ';
        cout << '\n';
        cout << y.size() << '\n';
        for(auto it : y) cout << it << ' ';
        cout << "\n";
    };
    auto msTomp = [] (multiset<int>&ms, map<int,int>&mp) {
        auto it = ms.begin();
        auto it2 = it;
        ++it2;
        while(it2!=ms.end()) {
            mp[*it2-*it]++;
            ++it2, ++it;
        }
    };
    auto insertNew = [] (multiset<int>::iterator it, multiset<int>&ms, map<int,int>&mp) {
        if(it!=ms.begin() && next(it, 1)!=ms.end()) {
            int gap = *next(it, 1) - *prev(it, 1);
            mp[gap]--;
            if(mp[gap]==0) mp.erase(gap);
            mp[*it - *prev(it, 1)]++;
            mp[*next(it, 1) - *it]++;
        } else if(it!=ms.begin()) {
            mp[*it-*prev(it, 1)]++;
        } else if(next(it, 1)!=ms.end()) {
            mp[*next(it, 1)-*it]++;
        }
    };
    vector<int>b = {0, 1, 2};
    do {
        vector<int>x = {a[b[0]], a[b[1]]}, y;
        if(x[0]>x[1]) swap(x[0], x[1]);
        int dif = x[1] - x[0];
    
        multiset<int>ms;
        map<int,int>mp;
        ms.insert(a[b[2]]);
        for(int i=3; i<N; ++i) {
            if(a[i]-x.back()==dif) x.push_back(a[i]);
            else ms.insert(a[i]);
        }
        if(ms.empty()) {
            print(x, y);
            return;
        }
        msTomp(ms, mp);
        for(int i=x.size(); i>0; --i) {
            if(i<x.size()) {
                ms.insert(x[i]);
                insertNew(ms.find(x[i]), ms, mp);
            }
            if(mp.size()<2) {
                for(auto it : ms) y.push_back(it);
                x.resize(i);
                print(x, y);
                return;
            }
        }
    } while(next_permutation(b.begin(), b.end()));
    vector<int>x = {a[0], a[1], a[2]}, y;
    if(x[2]-x[1]!=x[1]-x[0]) {
        cout << -1 << '\n';
        return;
    }
    multiset<int>ms;
    map<int,int>mp;
    for(int i=3; i<N; ++i) {
        if(a[i]-x.back()==x[1]-x[0]) x.push_back(a[i]);
        else ms.insert(a[i]);
    }
    if(ms.empty()) {
        print(x, y);
        return;
    }
    msTomp(ms, mp);
    
    for(int i=x.size(); i>0; --i) {
        if(i<x.size()) {
            ms.insert(x[i]);
            insertNew(ms.find(x[i]), ms, mp);
        }
        if(mp.size()<2) {
            for(auto it : ms) y.push_back(it);
            x.resize(i);
            print(x, y);
            return;
        }
    }
    cout << -1 << '\n';
    
    
    #ifndef ONLINE_JUDGE
        cerr << "Time elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
    #endif
}   
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
  //  #ifndef ONLINE_JUDGE
 //       freopen("input.txt", "r", stdin);
//    #endif
    PlayGround();
    
    return 0;
}

Compilation message

drvca.cpp: In function 'void PlayGround()':
drvca.cpp:75:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |             if(i<x.size()) {
      |                ~^~~~~~~~~
drvca.cpp:105:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  105 |         if(i<x.size()) {
      |            ~^~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 225 ms 6716 KB Output is correct
2 Correct 203 ms 6452 KB Output is correct
3 Correct 186 ms 6460 KB Output is correct
4 Correct 201 ms 6576 KB Output is correct
5 Correct 230 ms 6804 KB Output is correct
6 Correct 230 ms 6412 KB Output is correct
7 Correct 235 ms 6704 KB Output is correct
8 Correct 201 ms 6456 KB Output is correct
9 Correct 195 ms 6208 KB Output is correct
10 Correct 188 ms 6624 KB Output is correct
11 Correct 25 ms 2200 KB Output is correct
12 Correct 0 ms 204 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 225 ms 6716 KB Output is correct
32 Correct 203 ms 6452 KB Output is correct
33 Correct 186 ms 6460 KB Output is correct
34 Correct 201 ms 6576 KB Output is correct
35 Correct 230 ms 6804 KB Output is correct
36 Correct 230 ms 6412 KB Output is correct
37 Correct 235 ms 6704 KB Output is correct
38 Correct 201 ms 6456 KB Output is correct
39 Correct 195 ms 6208 KB Output is correct
40 Correct 188 ms 6624 KB Output is correct
41 Correct 25 ms 2200 KB Output is correct
42 Correct 0 ms 204 KB Output is correct
43 Correct 233 ms 6672 KB Output is correct
44 Correct 245 ms 5956 KB Output is correct
45 Correct 195 ms 6416 KB Output is correct
46 Correct 211 ms 6620 KB Output is correct
47 Correct 213 ms 5780 KB Output is correct
48 Correct 210 ms 6420 KB Output is correct
49 Correct 245 ms 6852 KB Output is correct
50 Correct 192 ms 5520 KB Output is correct
51 Correct 205 ms 6536 KB Output is correct
52 Correct 210 ms 6424 KB Output is correct
53 Correct 212 ms 5776 KB Output is correct
54 Correct 201 ms 6420 KB Output is correct
55 Correct 207 ms 6416 KB Output is correct
56 Correct 202 ms 5876 KB Output is correct
57 Correct 25 ms 2120 KB Output is correct
58 Correct 0 ms 204 KB Output is correct