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Submission #1109783

# Submission time Handle Problem Language Result Execution time Memory
1109783 2024-11-07T15:03:11 Z TrinhKhanhDung Connecting Supertrees (IOI20_supertrees) C++14
21 / 100
 144 ms 24084 KB 
#include <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define sz(x) (int)x.size()
#define ALL(v) v.begin(),v.end()
#define MASK(k) (1LL << (k))
#define BIT(x, i) (((x) >> (i)) & 1)
#define oo (ll)1e18
#define INF (ll)1e9
#define MOD (ll)(1e9 + 7)
 #include "supertrees.h"

using namespace std;

template<class T1, class T2>
    bool maximize(T1 &a, T2 b){if(a < b){a = b; return true;} return false;}

template<class T1, class T2>
    bool minimize(T1 &a, T2 b){if(a > b){a = b; return true;} return false;}

template<class T1, class T2>
    void add(T1 &a, T2 b){a += b; if(a >= MOD) a -= MOD;}

template<class T1, class T2>
    void sub(T1 &a, T2 b){a -= b; if(a < 0) a += MOD;}

template<class T>
    void cps(T &v){sort(ALL(v)); v.resize(unique(ALL(v)) - v.begin());}

const int MAX = 1003;

int construct(vector<vector<int>> p){
    int N = sz(p);

    auto subtask1_check = [&]() -> bool{
        for(int i = 0; i < N; i++){
            for(int j = 0; j < N; j++){
                if(p[i][j] != 1){
                    return false;
                }
            }
        }
        return true;
    };

    if(subtask1_check()){
        vector<vector<int>> ans(N, vector<int>(N, 0));
        for(int i = 1; i < N; i++){
            ans[i - 1][i] = ans[i][i - 1] = 1;
        }
        build(ans);
        return 1;
    }

    auto subtask2_check = [&]() -> bool{
        for(int i = 0; i < N; i++){
            for(int j = 0; j < N; j++){
                if(p[i][j] != 0 && p[i][j] != 1){
                    return false;
                }
            }
        }
        return true;
    };

    if(subtask2_check()){
        vector<vector<int>> ans(N, vector<int>(N, 0));

        vector<int> visited(N, false), save;
        auto dfs = [&](auto self, int u) -> void {
            if(visited[u]) return;
            visited[u] = true;
            save.push_back(u);
            for(int v = 0; v < N; v++) if(p[u][v]){
                self(self, v);
            }
        };

        for(int i = 0; i < N; i++) if(!visited[i]){
            save.clear();
            dfs(dfs, i);

            for(int j = 0; j < sz(save); j++){
                for(int k = j + 1; k < sz(save); k++){
                    if(p[save[j]][save[k]] == 0){
                        return 0;
                    }
                }
            }

            for(int j = 1; j < sz(save); j++){
                ans[save[j]][save[j - 1]] = ans[save[j - 1]][save[j]] = 1;
            }
        }

        build(ans);
        return 1;
    }

    auto subtask3_check = [&]() -> bool{
        for(int i = 0; i < N; i++){
            for(int j = i + 1; j < N; j++){
                if(p[i][j] != 0 && p[i][j] != 2){
                    return false;
                }
            }
        }
        return true;
    };

    if(subtask3_check()){
        vector<vector<int>> ans(N, vector<int>(N, 0));

        vector<int> visited(N, false), save;
        auto dfs = [&](auto self, int u) -> void {
            if(visited[u]) return;
            visited[u] = true;
            save.push_back(u);
            for(int v = u + 1; v < N; v++) if(p[u][v]){
                self(self, v);
            }
        };

        for(int i = 0; i < N; i++) if(!visited[i]){
            save.clear();
            dfs(dfs, i);

            if(sz(save) == 1) continue;
            if(sz(save) == 2){
                return 0;
            }

            for(int j = 0; j < sz(save); j++){
                for(int k = j + 1; k < sz(save); k++){
                    if(p[save[j]][save[k]] == 0){
                        return 0;
                    }
                }
            }

            for(int j = 1; j < sz(save); j++){
                ans[save[j]][save[j - 1]] = ans[save[j - 1]][save[j]] = 1;
            }
            ans[save[0]][save.back()] = ans[save.back()][save[0]] = 1;
        }

        build(ans);
        return 1;
    }

    return 0;
}

//int main(){
//    ios_base::sync_with_stdio(0); cin.tie(0);
//    // freopen("ADVERT.inp","r",stdin);
//    // freopen("ADVERT.out","w",stdout);
//
//    // cout << delivery(3, 2, 8, {1, 2, 5});
//
//    return 0;
//}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 7 ms 1104 KB Output is correct
7 Correct 122 ms 22048 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 7 ms 1104 KB Output is correct
7 Correct 122 ms 22048 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 6 ms 1256 KB Output is correct
13 Correct 117 ms 22088 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 3 ms 848 KB Output is correct
17 Correct 74 ms 12104 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 31 ms 5772 KB Output is correct
21 Correct 131 ms 22088 KB Output is correct
22 Correct 127 ms 22088 KB Output is correct
23 Correct 144 ms 22088 KB Output is correct
24 Correct 135 ms 22088 KB Output is correct
25 Correct 58 ms 12104 KB Output is correct
26 Correct 54 ms 12060 KB Output is correct
27 Correct 133 ms 22080 KB Output is correct
28 Correct 122 ms 22040 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 504 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 508 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 7 ms 1360 KB Output is correct
9 Correct 121 ms 23948 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 9 ms 1360 KB Output is correct
13 Correct 124 ms 24084 KB Output is correct
14 Incorrect 1 ms 336 KB Answer gives possible 1 while actual possible 0
15 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 33 ms 5712 KB Output is correct
5 Correct 125 ms 22088 KB Output is correct
6 Correct 139 ms 22044 KB Output is correct
7 Correct 136 ms 22088 KB Output is correct
8 Correct 1 ms 504 KB Output is correct
9 Correct 42 ms 5656 KB Output is correct
10 Correct 121 ms 22092 KB Output is correct
11 Correct 124 ms 22100 KB Output is correct
12 Correct 139 ms 22088 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Incorrect 1 ms 336 KB Answer gives possible 0 while actual possible 1
15 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 7 ms 1104 KB Output is correct
7 Correct 122 ms 22048 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 6 ms 1256 KB Output is correct
13 Correct 117 ms 22088 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 3 ms 848 KB Output is correct
17 Correct 74 ms 12104 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 31 ms 5772 KB Output is correct
21 Correct 131 ms 22088 KB Output is correct
22 Correct 127 ms 22088 KB Output is correct
23 Correct 144 ms 22088 KB Output is correct
24 Correct 135 ms 22088 KB Output is correct
25 Correct 58 ms 12104 KB Output is correct
26 Correct 54 ms 12060 KB Output is correct
27 Correct 133 ms 22080 KB Output is correct
28 Correct 122 ms 22040 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 1 ms 336 KB Output is correct
31 Correct 1 ms 504 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 1 ms 336 KB Output is correct
34 Correct 1 ms 508 KB Output is correct
35 Correct 1 ms 336 KB Output is correct
36 Correct 7 ms 1360 KB Output is correct
37 Correct 121 ms 23948 KB Output is correct
38 Correct 1 ms 336 KB Output is correct
39 Correct 1 ms 336 KB Output is correct
40 Correct 9 ms 1360 KB Output is correct
41 Correct 124 ms 24084 KB Output is correct
42 Incorrect 1 ms 336 KB Answer gives possible 1 while actual possible 0
43 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 7 ms 1104 KB Output is correct
7 Correct 122 ms 22048 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 6 ms 1256 KB Output is correct
13 Correct 117 ms 22088 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 3 ms 848 KB Output is correct
17 Correct 74 ms 12104 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 31 ms 5772 KB Output is correct
21 Correct 131 ms 22088 KB Output is correct
22 Correct 127 ms 22088 KB Output is correct
23 Correct 144 ms 22088 KB Output is correct
24 Correct 135 ms 22088 KB Output is correct
25 Correct 58 ms 12104 KB Output is correct
26 Correct 54 ms 12060 KB Output is correct
27 Correct 133 ms 22080 KB Output is correct
28 Correct 122 ms 22040 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 1 ms 336 KB Output is correct
31 Correct 1 ms 504 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 1 ms 336 KB Output is correct
34 Correct 1 ms 508 KB Output is correct
35 Correct 1 ms 336 KB Output is correct
36 Correct 7 ms 1360 KB Output is correct
37 Correct 121 ms 23948 KB Output is correct
38 Correct 1 ms 336 KB Output is correct
39 Correct 1 ms 336 KB Output is correct
40 Correct 9 ms 1360 KB Output is correct
41 Correct 124 ms 24084 KB Output is correct
42 Incorrect 1 ms 336 KB Answer gives possible 1 while actual possible 0
43 Halted 0 ms 0 KB -