oj.uz

답안 #676047

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
676047 2022-12-29T06:12:20 Z Tangirkul Cijanobakterije (COCI21_cijanobakterije) C++17
12 / 70
 27 ms 13196 KB 
#include<bits/stdc++.h>
  
#define ll long long
#define fi first
#define se second
#define pb push_back
#define sz size
#define Junanna ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
  
using namespace std;
  
const ll K = 32;
const ll INF = 1e9 + 7;
const ll MOD = 1e9 + 7;
const ll N = (1e5 + 125);
 
ll n, m;
vector <ll> g[N];
bool used[N];

ll dfs (ll v, ll st)
{
    used[v] = 1;
    ll ans1 = 0;
    for (ll i = 0; i < g[v].sz (); i++)
    {
        ll to = g[v][i];
        if (!used[to])
        {
            ans1 = max (ans1, dfs (to, st));
        }
    }
    return ans1 + 1;
}

void ma1n ()
{
    cin >> n >> m;
    ll ans = 0;
    for (ll i = 1; i <= m; i++)
    {
        ll x, y;
        cin >> x >> y;
        g[x].pb (y);
        g[y].pb (x);
    }
    for (ll i = 1; i <= n; i++)
    {
        if (!used[i] && g[i].sz () == 1)
        {
            ans += dfs (i, i);
        }
        else
        {
            if (g[i].sz () == 0)
            {
                ans++;
            }
        }
    }
    cout << ans;
}
    
int main ()
{
    Junanna;
    ll t = 1;
    while (t--)
    {
        ma1n ();
    }
    return 0;
}

Compilation message

Main.cpp: In function 'long long int dfs(long long int, long long int)':
Main.cpp:25:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |     for (ll i = 0; i < g[v].sz (); i++)
      |                    ~~^~~~~~~~~~~~

Subtask #1
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 6 ms 3412 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 27 ms 13196 KB Output is correct
2 Correct 4 ms 3068 KB Output is correct
3 Correct 5 ms 3600 KB Output is correct
4 Correct 9 ms 4180 KB Output is correct

Subtask #3
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2672 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 4 ms 3284 KB Output is correct
6 Correct 8 ms 3972 KB Output is correct
7 Correct 14 ms 4628 KB Output is correct

Subtask #4
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 2644 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 6 ms 3412 KB Output isn't correct
2 Halted 0 ms 0 KB -