oj.uz

답안 #808085

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
808085 2023-08-05T04:33:42 Z The_Samurai 슈퍼트리 잇기 (IOI20_supertrees) C++17
21 / 100
 187 ms 22480 KB 
#include "bits/stdc++.h"
#ifdef sunnatov
#include "grader.cpp"
#else
#include "supertrees.h"
#endif

using namespace std;

struct dsu {
    vector<int> p, size;

    void init(int n) {
        p.assign(n, 0);
        size.assign(n, 1);
        for (int i = 0; i < n; i++) p[i] = i;
    }

    int get(int a) {
        return p[a] == a ? a : p[a] = get(p[a]);
    }

    void add(int a, int b) {
        a = get(a);
        b = get(b);
        if (a == b) return;
        if (size[a] > size[b]) swap(a, b);
        size[b] += size[a];
        p[a] = b;
    }
};


int construct(std::vector<std::vector<int>> p) {
	int n = p.size();

    vector<vector<int>> g(n, vector<int>(n));
    dsu ds;
    ds.init(n);
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            if (p[i][j] == 1) {
                ds.add(i, j);
            }
        }
    }
    vector<bool> vis(n);
    for (int _ = 0; _ < n; _++) {
        int s = -1;
        vector<int> v;
        for (int i = 0; i < n; i++) {
            if (vis[i]) continue;
            if (s == -1) s = ds.get(i);
            if (ds.get(i) != s) continue;
            v.emplace_back(i);
        }
        if (v.empty()) break;
        for (int i = 0; i < v.size(); i++) {
            for (int j = i + 1; j < v.size(); j++) {
                if (!p[v[i]][v[j]]) return 0;
            }
        }
        for (int i = 1; i < v.size(); i++) g[v[i - 1]][v[i]] = g[v[i]][v[i - 1]] = 1;
        for (int x: v) vis[x] = true;
    }
    build(g);

	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:58:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |         for (int i = 0; i < v.size(); i++) {
      |                         ~~^~~~~~~~~~
supertrees.cpp:59:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |             for (int j = i + 1; j < v.size(); j++) {
      |                                 ~~^~~~~~~~~~
supertrees.cpp:63:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |         for (int i = 1; i < v.size(); i++) g[v[i - 1]][v[i]] = g[v[i]][v[i - 1]] = 1;
      |                         ~~^~~~~~~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1108 KB Output is correct
7 Correct 146 ms 22024 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1108 KB Output is correct
7 Correct 146 ms 22024 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 6 ms 1108 KB Output is correct
13 Correct 146 ms 22020 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 280 KB Output is correct
16 Correct 3 ms 852 KB Output is correct
17 Correct 68 ms 12636 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 38 ms 5984 KB Output is correct
21 Correct 160 ms 22480 KB Output is correct
22 Correct 150 ms 22348 KB Output is correct
23 Correct 187 ms 22476 KB Output is correct
24 Correct 183 ms 22412 KB Output is correct
25 Correct 73 ms 12632 KB Output is correct
26 Correct 59 ms 12624 KB Output is correct
27 Correct 165 ms 22356 KB Output is correct
28 Correct 174 ms 22372 KB Output is correct

Subtask #3
0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Incorrect 1 ms 212 KB Answer gives possible 1 while actual possible 0
5 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 1 ms 212 KB Too few ways to get from 0 to 1, should be 2 found 0
3 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1108 KB Output is correct
7 Correct 146 ms 22024 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 6 ms 1108 KB Output is correct
13 Correct 146 ms 22020 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 280 KB Output is correct
16 Correct 3 ms 852 KB Output is correct
17 Correct 68 ms 12636 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 38 ms 5984 KB Output is correct
21 Correct 160 ms 22480 KB Output is correct
22 Correct 150 ms 22348 KB Output is correct
23 Correct 187 ms 22476 KB Output is correct
24 Correct 183 ms 22412 KB Output is correct
25 Correct 73 ms 12632 KB Output is correct
26 Correct 59 ms 12624 KB Output is correct
27 Correct 165 ms 22356 KB Output is correct
28 Correct 174 ms 22372 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Incorrect 1 ms 212 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1108 KB Output is correct
7 Correct 146 ms 22024 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 6 ms 1108 KB Output is correct
13 Correct 146 ms 22020 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 280 KB Output is correct
16 Correct 3 ms 852 KB Output is correct
17 Correct 68 ms 12636 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 38 ms 5984 KB Output is correct
21 Correct 160 ms 22480 KB Output is correct
22 Correct 150 ms 22348 KB Output is correct
23 Correct 187 ms 22476 KB Output is correct
24 Correct 183 ms 22412 KB Output is correct
25 Correct 73 ms 12632 KB Output is correct
26 Correct 59 ms 12624 KB Output is correct
27 Correct 165 ms 22356 KB Output is correct
28 Correct 174 ms 22372 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Incorrect 1 ms 212 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -