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답안 #827471

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
827471 2023-08-16T13:50:51 Z BERNARB01 Newspapers (CEOI21_newspapers) C++17
50 / 100
 1 ms 512 KB 
    /**
     *    author:  BERNARD B.01
    **/
    #include <bits/stdc++.h>
     
    using namespace std;
     
    #ifdef B01
    #include "deb.h"
    #else
    #define deb(...)
    #endif
     
    int main() {
      ios::sync_with_stdio(false);
      cin.tie(0);
      int n, m;
      cin >> n >> m;
      if (m != n - 1) {
        cout << "NO" << '\n';
        return 0;
      }
      vector<vector<int>> g(n);
      for (int i = 0; i < m; i++) {
        int u, v;
        cin >> u >> v;
        --u; --v;
        g[u].push_back(v);
        g[v].push_back(u);
      }
      int d = 0, to = 0;
      function<void(int, int, int)> Dfs = [&](int v, int pr, int dph) {
        if (dph >= d) {
          d = dph;
          to = v;
        }
        for (int u : g[v]) {
          if (u == pr) {
            continue;
          }
          Dfs(u, v, dph + 1);
        }
      };
      Dfs(0, -1, 0);
      int a = to;
      Dfs(to, -1, 0);
      int b = to;
      vector<int> que;
      vector<int> dist(n, -1);
      function<bool(int, int, int)> Mark = [&](int v, int pr, int tar) {
        if (v == tar) {
          que.push_back(v);
          dist[v] = 0;
          return true;
        }
        for (int u : g[v]) {
          if (u == pr) {
            continue;
          }
          if (Mark(u, v, tar)) {
            que.push_back(v);
            dist[v] = 0;
            return true;
          }
        }
        return false;
      };
      Mark(a, -1, b);
      for (int b = 0; b < (int) que.size(); b++) {
        for (int u : g[que[b]]) {
          if (dist[u] == -1) {
            dist[u] = dist[que[b]] + 1;
            que.push_back(u);
          }
        }
      }
      if (*max_element(dist.begin(), dist.end()) > 2) {
        cout << "NO" << '\n';
        return 0;
      }
      cout << "YES" << '\n';
      cout << 1 << '\n';
      cout << 1 << '\n';
      return 0;
    }

Subtask #1
6.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
3 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
4 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
5 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
6 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
7 Correct 0 ms 324 KB Output is correct
8 Partially correct 0 ms 316 KB Failed to provide a successful strategy.
9 Correct 0 ms 212 KB Output is correct
10 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
11 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
12 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
13 Partially correct 0 ms 320 KB Failed to provide a successful strategy.
14 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
15 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
16 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
17 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
18 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
19 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
20 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
21 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
22 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
23 Partially correct 0 ms 320 KB Failed to provide a successful strategy.
24 Partially correct 0 ms 316 KB Failed to provide a successful strategy.
25 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
26 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
27 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
28 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
29 Correct 0 ms 212 KB Output is correct
30 Partially correct 0 ms 316 KB Failed to provide a successful strategy.
31 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
32 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
33 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
34 Correct 0 ms 320 KB Output is correct
35 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
36 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
37 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
38 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
39 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
40 Partially correct 1 ms 320 KB Failed to provide a successful strategy.
41 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
42 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
43 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
44 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
45 Correct 0 ms 212 KB Output is correct
46 Correct 0 ms 324 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
49 Correct 0 ms 212 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
52 Correct 0 ms 320 KB Output is correct
53 Correct 0 ms 212 KB Output is correct
54 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
55 Correct 0 ms 212 KB Output is correct
56 Correct 0 ms 212 KB Output is correct
57 Correct 0 ms 212 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 1 ms 212 KB Output is correct
61 Correct 0 ms 212 KB Output is correct
62 Correct 0 ms 212 KB Output is correct
63 Correct 0 ms 212 KB Output is correct
64 Correct 0 ms 212 KB Output is correct

Subtask #2
4.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
3 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
4 Partially correct 1 ms 320 KB Failed to provide a successful strategy.
5 Partially correct 0 ms 320 KB Failed to provide a successful strategy.
6 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
7 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
8 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
9 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
10 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
11 Partially correct 1 ms 468 KB Failed to provide a successful strategy.
12 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
13 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
14 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
15 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
16 Partially correct 1 ms 448 KB Failed to provide a successful strategy.
17 Partially correct 1 ms 468 KB Failed to provide a successful strategy.
18 Partially correct 1 ms 468 KB Failed to provide a successful strategy.
19 Partially correct 1 ms 468 KB Failed to provide a successful strategy.
20 Partially correct 1 ms 468 KB Failed to provide a successful strategy.

Subtask #3
40.0 / 80.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
3 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
4 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
5 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
6 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
7 Correct 0 ms 324 KB Output is correct
8 Partially correct 0 ms 316 KB Failed to provide a successful strategy.
9 Correct 0 ms 212 KB Output is correct
10 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
11 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
12 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
13 Partially correct 0 ms 320 KB Failed to provide a successful strategy.
14 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
15 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
16 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
17 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
18 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
19 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
20 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
21 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
22 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
23 Partially correct 0 ms 320 KB Failed to provide a successful strategy.
24 Partially correct 0 ms 316 KB Failed to provide a successful strategy.
25 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
26 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
27 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
28 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
29 Correct 0 ms 212 KB Output is correct
30 Partially correct 0 ms 316 KB Failed to provide a successful strategy.
31 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
32 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
33 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
34 Correct 0 ms 320 KB Output is correct
35 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
36 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
37 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
38 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
39 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
40 Partially correct 1 ms 320 KB Failed to provide a successful strategy.
41 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
42 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
43 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
44 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
45 Correct 0 ms 212 KB Output is correct
46 Correct 0 ms 324 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
49 Correct 0 ms 212 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
52 Correct 0 ms 320 KB Output is correct
53 Correct 0 ms 212 KB Output is correct
54 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
55 Correct 0 ms 212 KB Output is correct
56 Correct 0 ms 212 KB Output is correct
57 Correct 0 ms 212 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 1 ms 212 KB Output is correct
61 Correct 0 ms 212 KB Output is correct
62 Correct 0 ms 212 KB Output is correct
63 Correct 0 ms 212 KB Output is correct
64 Correct 0 ms 212 KB Output is correct
65 Correct 0 ms 212 KB Output is correct
66 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
67 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
68 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
69 Partially correct 0 ms 320 KB Failed to provide a successful strategy.
70 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
71 Correct 0 ms 212 KB Output is correct
72 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
73 Correct 1 ms 212 KB Output is correct
74 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
75 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
76 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
77 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
78 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
79 Correct 1 ms 340 KB Output is correct
80 Correct 1 ms 340 KB Output is correct
81 Correct 1 ms 340 KB Output is correct
82 Correct 1 ms 328 KB Output is correct
83 Correct 1 ms 340 KB Output is correct
84 Correct 1 ms 340 KB Output is correct
85 Correct 1 ms 340 KB Output is correct
86 Correct 1 ms 340 KB Output is correct
87 Correct 1 ms 340 KB Output is correct
88 Correct 1 ms 340 KB Output is correct
89 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
90 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
91 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
92 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
93 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
94 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
95 Partially correct 1 ms 428 KB Failed to provide a successful strategy.
96 Partially correct 1 ms 320 KB Failed to provide a successful strategy.
97 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
98 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
99 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
100 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
101 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
102 Partially correct 1 ms 324 KB Failed to provide a successful strategy.
103 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
104 Partially correct 1 ms 324 KB Failed to provide a successful strategy.
105 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
106 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
107 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
108 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
109 Partially correct 1 ms 324 KB Failed to provide a successful strategy.
110 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
111 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
112 Partially correct 1 ms 328 KB Failed to provide a successful strategy.
113 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
114 Partially correct 1 ms 320 KB Failed to provide a successful strategy.
115 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
116 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
117 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
118 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
119 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
120 Partially correct 1 ms 320 KB Failed to provide a successful strategy.
121 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
122 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
123 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
124 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
125 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
126 Partially correct 1 ms 324 KB Failed to provide a successful strategy.
127 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
128 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
129 Correct 1 ms 340 KB Output is correct
130 Correct 1 ms 320 KB Output is correct
131 Correct 1 ms 340 KB Output is correct
132 Correct 1 ms 340 KB Output is correct
133 Correct 1 ms 324 KB Output is correct
134 Correct 0 ms 340 KB Output is correct
135 Correct 0 ms 340 KB Output is correct
136 Correct 0 ms 340 KB Output is correct
137 Correct 0 ms 340 KB Output is correct
138 Correct 0 ms 340 KB Output is correct
139 Correct 0 ms 340 KB Output is correct
140 Correct 0 ms 328 KB Output is correct
141 Correct 0 ms 340 KB Output is correct
142 Correct 1 ms 340 KB Output is correct
143 Correct 0 ms 340 KB Output is correct
144 Partially correct 1 ms 512 KB Failed to provide a successful strategy.
145 Partially correct 1 ms 468 KB Failed to provide a successful strategy.