oj.uz

답안 #799259

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
799259 2023-07-31T11:23:33 Z Tunglam07 Cijanobakterije (COCI21_cijanobakterije) C++17
70 / 70
 41 ms 11676 KB 
#include<bits/stdc++.h>
using namespace std;
 
long long n, m;
vector <long long> vec[100005];
bool visited[100005], visited1[100005];
pair <long long, long long> ans;

void dfs (long long v, long long d)
{
    if (d > ans.first)
    {
        ans = {d, v};
    }
    visited[v] = 1;
    for (int i = 0; i < vec[v].size (); i++)
    {
        long long id = vec[v][i];
        if (!visited[id])
        {
            dfs (id, d + 1);
        }
    }
}
 
void dfs1 (long long v, long long d)
{
    if (d > ans.first)
    {
        ans = {d, v};
    }
    visited1[v] = 1;
    for (int i = 0; i < vec[v].size (); i++)
    {
        long long id = vec[v][i];
        if (!visited1[id])
        {
            dfs1 (id, d + 1);
        }
    }
}
     
int main ()
{
    ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
    long long t = 1;
    while (t--)
    {
	    long long len = 0;
        cin >> n >> m;
	    for (int i = 1; i <= m; i++)
	    {
	        long long x, y;
	        cin >> x >> y;
	        vec[x].push_back (y);
	        vec[y].push_back (x);
	    }
	    for (int i = 1; i <= n; i++)
	    {
	        if (!visited[i])
	        {
	            dfs (i, 1);
	            ans.first = 0;
	            dfs1 (ans.second, 1);
	            len += ans.first;
	            ans = {0, 0};
	        }
	    }
	    cout << len;
    }
}

Compilation message

Main.cpp: In function 'void dfs(long long int, long long int)':
Main.cpp:16:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |     for (int i = 0; i < vec[v].size (); i++)
      |                     ~~^~~~~~~~~~~~~~~~
Main.cpp: In function 'void dfs1(long long int, long long int)':
Main.cpp:33:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |     for (int i = 0; i < vec[v].size (); i++)
      |                     ~~^~~~~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 3460 KB Output is correct
2 Correct 10 ms 4364 KB Output is correct
3 Correct 14 ms 5092 KB Output is correct
4 Correct 23 ms 6004 KB Output is correct
5 Correct 25 ms 6780 KB Output is correct
6 Correct 36 ms 7648 KB Output is correct

Subtask #2
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 24 ms 11676 KB Output is correct
2 Correct 3 ms 3156 KB Output is correct
3 Correct 6 ms 3712 KB Output is correct
4 Correct 7 ms 4180 KB Output is correct

Subtask #3
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 4 ms 3284 KB Output is correct
6 Correct 6 ms 3984 KB Output is correct
7 Correct 8 ms 4684 KB Output is correct

Subtask #4
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct

Subtask #5
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 3460 KB Output is correct
2 Correct 10 ms 4364 KB Output is correct
3 Correct 14 ms 5092 KB Output is correct
4 Correct 23 ms 6004 KB Output is correct
5 Correct 25 ms 6780 KB Output is correct
6 Correct 36 ms 7648 KB Output is correct
7 Correct 24 ms 11676 KB Output is correct
8 Correct 3 ms 3156 KB Output is correct
9 Correct 6 ms 3712 KB Output is correct
10 Correct 7 ms 4180 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 1 ms 2644 KB Output is correct
13 Correct 1 ms 2644 KB Output is correct
14 Correct 1 ms 2644 KB Output is correct
15 Correct 4 ms 3284 KB Output is correct
16 Correct 6 ms 3984 KB Output is correct
17 Correct 8 ms 4684 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 1 ms 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 41 ms 7712 KB Output is correct
30 Correct 9 ms 3924 KB Output is correct
31 Correct 18 ms 6648 KB Output is correct
32 Correct 12 ms 4736 KB Output is correct
33 Correct 26 ms 7372 KB Output is correct
34 Correct 17 ms 5460 KB Output is correct
35 Correct 20 ms 6868 KB Output is correct
36 Correct 22 ms 6104 KB Output is correct
37 Correct 24 ms 7408 KB Output is correct
38 Correct 37 ms 6788 KB Output is correct
39 Correct 21 ms 7040 KB Output is correct