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Submission #265420

# Submission time Handle Problem Language Result Execution time Memory
265420 2020-08-14T19:32:10 Z DS007 Duathlon (APIO18_duathlon) C++14
23 / 100
 1000 ms 1048580 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long

const int N = 1e5, M = 2e5;
vector<int> adj[N];
bool explored[N];
int n, m, dp[N][3], ans;

void dfs(int v, int p = -1) {
    //cerr << v << endl;
    explored[v] = true;
    int s1 = 0, s2 = 0;
    dp[v][0] = 1;

    for (int i : adj[v]) {
        if (i != p){
            dfs(i, v);
            dp[v][0] += dp[i][0];
            dp[v][1] += dp[i][0] + dp[i][1];
            dp[v][2] += dp[i][1] * 2;
            s2 += dp[i][1];
            s1 += dp[i][0];
        }
    }

    for (int i : adj[v]) {
        if (i != p) {
            s2 -= dp[i][1];
            s1 -= dp[i][0];
            dp[v][2] += s2 * dp[i][0] * 2;
            dp[v][2] += s1 * dp[i][0];
            s2 += dp[i][1];
            s1 += dp[i][0];
        }
    }

    ans += dp[v][2];
}

int solveTestCase() {
    cin >> n >> m;
    for (int i = 0; i < m; i++) {
        int u, v;
        cin >> u >> v;
        u--, v--;
        adj[u].push_back(v);
        adj[v].push_back(u);
    }

    for (int i = 0; i < n; i++) {
        if (!explored[i])
            dfs(i);
        //cerr << dp[i][0] << " " << dp[i][1] << " " << dp[i][2] << endl;
    }

    cout << ans;
    return 0;
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);

    int t = 1;
    //cin >> t;
    while (t--)
        solveTestCase();
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 592 ms 1048580 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Runtime error 592 ms 1048580 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1114 ms 449144 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2816 KB Output is correct
2 Correct 2 ms 2816 KB Output is correct
3 Correct 3 ms 2688 KB Output is correct
4 Correct 2 ms 2816 KB Output is correct
5 Correct 3 ms 2816 KB Output is correct
6 Correct 3 ms 2816 KB Output is correct
7 Correct 2 ms 2816 KB Output is correct
8 Correct 2 ms 2816 KB Output is correct
9 Correct 2 ms 2816 KB Output is correct
10 Correct 2 ms 2816 KB Output is correct
11 Correct 2 ms 2816 KB Output is correct
12 Correct 3 ms 2816 KB Output is correct
13 Correct 2 ms 2816 KB Output is correct
14 Correct 3 ms 2688 KB Output is correct
15 Correct 2 ms 2688 KB Output is correct
16 Correct 2 ms 2688 KB Output is correct
17 Correct 2 ms 2816 KB Output is correct
18 Correct 2 ms 2816 KB Output is correct
19 Correct 2 ms 2816 KB Output is correct
20 Correct 2 ms 2816 KB Output is correct

Subtask #5
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 8804 KB Output is correct
2 Correct 57 ms 10104 KB Output is correct
3 Correct 58 ms 10104 KB Output is correct
4 Correct 61 ms 10040 KB Output is correct
5 Correct 59 ms 10104 KB Output is correct
6 Correct 73 ms 14584 KB Output is correct
7 Correct 67 ms 13432 KB Output is correct
8 Correct 65 ms 12536 KB Output is correct
9 Correct 76 ms 11768 KB Output is correct
10 Correct 57 ms 10144 KB Output is correct
11 Correct 56 ms 10104 KB Output is correct
12 Correct 64 ms 10104 KB Output is correct
13 Correct 58 ms 10104 KB Output is correct
14 Correct 63 ms 9720 KB Output is correct
15 Correct 53 ms 9464 KB Output is correct
16 Correct 33 ms 8184 KB Output is correct
17 Correct 53 ms 10484 KB Output is correct
18 Correct 48 ms 10340 KB Output is correct
19 Correct 41 ms 10336 KB Output is correct
20 Correct 40 ms 10344 KB Output is correct

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2688 KB Output is correct
2 Correct 2 ms 2816 KB Output is correct
3 Runtime error 748 ms 1048580 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 8952 KB Output is correct
2 Correct 63 ms 10052 KB Output is correct
3 Runtime error 901 ms 1048580 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# Verdict Execution time Memory Grader output
1 Runtime error 592 ms 1048580 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 592 ms 1048580 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -