oj.uz

Submission #975401

# Submission time Handle Problem Language Result Execution time Memory
975401 2024-05-05T06:07:52 Z akacool445k Duathlon (APIO18_duathlon) C++14
0 / 100
 69 ms 14888 KB 
#include <bits/stdc++.h>
// #include "jumps.h"
using namespace std;
// #define int long long
#define ll long long
#define ff first
#define ss second
#define pii pair <int, int>
#define fast ios_base::sync_with_stdio(NULL); cin.tie(NULL)

const int inf = 1e9 + 9;
const int mxn = 2e5 + 2;
const int mod = 1e9 + 7;
vector<vector<int>> adj(mxn);
vector<int> chld(mxn);
vector<bool> did(mxn);
void dfs(int x) {
    if(did[x]) return;
    did[x] = 1; 
    for(auto a : adj[x]) {
        if(!did[a]) {
            chld[x]++;
            dfs(a);
            chld[x] += chld[a];
        }
    }
}
int main() {
    int n, m;
    cin >> n >> m;
    for(int i = 0; i < m; i++) {
        int a, b;
        cin >> a >> b;
        adj[a].push_back(b);
        adj[b].push_back(a);
    }
    for(int i = 1; i <= n; i++) {
        dfs(i);
    }
    // for(int i = 1; i <= n; i++) {
    //     cout << chld[i] << ' ';
    // }
    int ans = 0;
    for(int i = 1; i <= n; i++) {
        ans += chld[i] * (chld[i] - 1);
    }
    cout << ans;
    cout << '\n';
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 5724 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 5724 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 69 ms 14888 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 5980 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 59 ms 10324 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 5976 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 57 ms 10348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 5724 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 5724 KB Output isn't correct
2 Halted 0 ms 0 KB -