oj.uz

답안 #927412

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
927412 2024-02-14T20:16:06 Z VMaksimoski008 슈퍼트리 잇기 (IOI20_supertrees) C++14
21 / 100
 167 ms 26120 KB 
#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;
 
struct DSU {
    int n, comp;
    vector<int> par, size;
 
    void config(int _n) {
        n = _n + 1;
        comp = _n;
        par.resize(n+1);
        size.resize(n+1, 1);
        for(int i=1; i<=n; i++) par[i] = i;
    }
 
    int get(int u) {
        if(u == par[u]) return u;
        return par[u] = get(par[u]);
    }
 
    bool uni(int u, int v) {
        u = get(u), v = get(v);
 
        if(u == v) return false;
        if(size[u] < size[v]) swap(u, v);
 
        size[u] += size[v];
        par[v] = u;
        comp--;
 
        return true;
    }
 
    int getComp() { return comp; }
    int getSize(int u) { return size[get(u)]; }
    bool sameSet(int u, int v) { return get(u) == get(v); }
    bool isLeader(int u) { return get(u) == u; }
};

vector<vector<int> > graph;
vector<bool> vis;
vector<int> G;

void dfs(int u) {
    vis[u] = 1;
    G.push_back(u);

    for(int &v : graph[u]) {
        if(vis[v]) continue;
        dfs(v);
    }
}
 
int construct(vector<vector<int> > p) {
    int n = p.size();
    vector<vector<int> > B(n, vector<int>(n, 0));
    graph.resize(n);
    vis.resize(n);

    DSU dsu; dsu.config(n);

    for(int i=0; i<n; i++) {
        for(int j=0; j<n; j++) {
            if(p[i][j] == 1 && i != j) {
                if(!dsu.sameSet(i, j)) {
                    dsu.uni(i, j);
                    B[i][j] = B[j][i] = 1;
                }
            }
        }
    }
 
    for(int i=0; i<n; i++) {
        for(int j=0; j<n; j++) {
            if(p[i][j] == 1 && !dsu.sameSet(i, j)) return 0;
            if(p[i][j] == 0 && dsu.sameSet(i, j)) return 0;
        }
    }

    bool ok = 0;

    for(int i=0; i<n; i++) {
        for(int j=i+1; j<n; j++) {
            if(p[i][j] == 2 && dsu.isLeader(i) && dsu.isLeader(j)) {
                ok = 1;
                graph[i].push_back(j);
                graph[j].push_back(i);
            }
        }
    }

    for(int i=0; i<n && ok; i++) {
        if(vis[i]) continue;

        G.clear();
        dfs(i);

        if(G.size() == 2) return 0;
        if(G.size() == 1) continue;

        for(int i=0; i<G.size()-1; i++)
            for(int j=i+1; j<G.size(); j++)
                if(p[i][j] != 2) return 0;

        G.push_back(G[0]);
        for(int i=0; i<G.size()-1; i++)
            B[G[i]][G[i+1]] = B[G[i+1]][G[i]] = 1;
    }

    build(B);
    return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:102:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  102 |         for(int i=0; i<G.size()-1; i++)
      |                      ~^~~~~~~~~~~
supertrees.cpp:103:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  103 |             for(int j=i+1; j<G.size(); j++)
      |                            ~^~~~~~~~~
supertrees.cpp:107:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  107 |         for(int i=0; i<G.size()-1; i++)
      |                      ~^~~~~~~~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1116 KB Output is correct
7 Correct 155 ms 22104 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1116 KB Output is correct
7 Correct 155 ms 22104 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 1116 KB Output is correct
13 Correct 146 ms 22032 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 71 ms 12296 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 39 ms 5736 KB Output is correct
21 Correct 167 ms 22024 KB Output is correct
22 Correct 152 ms 22020 KB Output is correct
23 Correct 160 ms 22096 KB Output is correct
24 Correct 145 ms 22096 KB Output is correct
25 Correct 61 ms 12116 KB Output is correct
26 Correct 71 ms 12296 KB Output is correct
27 Correct 162 ms 22036 KB Output is correct
28 Correct 151 ms 22100 KB Output is correct

Subtask #3
0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 6 ms 1284 KB Output is correct
9 Correct 155 ms 22296 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 1372 KB Output is correct
13 Correct 147 ms 26120 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 77 ms 15116 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 548 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Incorrect 16 ms 3476 KB Answer gives possible 0 while actual possible 1
22 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 38 ms 5712 KB Output is correct
5 Correct 155 ms 22028 KB Output is correct
6 Correct 146 ms 22092 KB Output is correct
7 Correct 155 ms 22100 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Incorrect 16 ms 3420 KB Answer gives possible 0 while actual possible 1
10 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1116 KB Output is correct
7 Correct 155 ms 22104 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 1116 KB Output is correct
13 Correct 146 ms 22032 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 71 ms 12296 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 39 ms 5736 KB Output is correct
21 Correct 167 ms 22024 KB Output is correct
22 Correct 152 ms 22020 KB Output is correct
23 Correct 160 ms 22096 KB Output is correct
24 Correct 145 ms 22096 KB Output is correct
25 Correct 61 ms 12116 KB Output is correct
26 Correct 71 ms 12296 KB Output is correct
27 Correct 162 ms 22036 KB Output is correct
28 Correct 151 ms 22100 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 6 ms 1284 KB Output is correct
37 Correct 155 ms 22296 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 6 ms 1372 KB Output is correct
41 Correct 147 ms 26120 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 77 ms 15116 KB Output is correct
46 Correct 0 ms 344 KB Output is correct
47 Correct 0 ms 548 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Incorrect 16 ms 3476 KB Answer gives possible 0 while actual possible 1
50 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1116 KB Output is correct
7 Correct 155 ms 22104 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 1116 KB Output is correct
13 Correct 146 ms 22032 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 71 ms 12296 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 39 ms 5736 KB Output is correct
21 Correct 167 ms 22024 KB Output is correct
22 Correct 152 ms 22020 KB Output is correct
23 Correct 160 ms 22096 KB Output is correct
24 Correct 145 ms 22096 KB Output is correct
25 Correct 61 ms 12116 KB Output is correct
26 Correct 71 ms 12296 KB Output is correct
27 Correct 162 ms 22036 KB Output is correct
28 Correct 151 ms 22100 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 6 ms 1284 KB Output is correct
37 Correct 155 ms 22296 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 6 ms 1372 KB Output is correct
41 Correct 147 ms 26120 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 77 ms 15116 KB Output is correct
46 Correct 0 ms 344 KB Output is correct
47 Correct 0 ms 548 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Incorrect 16 ms 3476 KB Answer gives possible 0 while actual possible 1
50 Halted 0 ms 0 KB -