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Submission #109850

# Submission time Handle Problem Language Result Execution time Memory
109850 2019-05-08T07:23:25 Z Alexa2001 Fireworks (APIO16_fireworks) C++17
7 / 100
 18 ms 14520 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int Nmax = 6e5 + 5;
const ll inf = 1e18;

vector<int> v[Nmax];
ll opt[Nmax], A[Nmax], B[Nmax];
int up[Nmax];
int n, m;


ll moove(ll x, ll l, ll r)
{
    if(x < l) return l - x;
    if(x > r) return x - r;
    return 0;
}

void dfs(int node)
{
    if(v[node].empty())
    {
        opt[node] = 0;
        A[node] = up[node];
        B[node] = up[node];
        return;
    }

    for(auto son : v[node]) dfs(son);

    map<ll,int> change;

    for(auto son : v[node])
    {
        change[0] -= 1;
        change[A[son]] += 1;
        change[B[son]] += 1;
    }

    int sum = 0;
    ll L = -1, R = -1;

    for(auto &it : change)
    {
        sum += it.second;
        it.second = sum;

        if(it.second >= 0 && L == -1) L = it.first;
        if(it.second > 0 && R == -1) R = it.first;
    }

    A[node] = L;
    B[node] = R;

    for(auto son : v[node])
        opt[node] += opt[son] + moove(L, A[son], B[son]);

    A[node] += up[node];
    B[node] += up[node];
}

int main()
{
  //  freopen("input", "r", stdin);
    cin.sync_with_stdio(false); cin.tie(0);

    int i, x;

    cin >> n >> m; n += m;

    for(i=2; i<=n; ++i)
    {
        cin >> x >> up[i];
        v[x].push_back(i);
    }

    dfs(1);
    cout << opt[1] << '\n';

    return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 14464 KB Output is correct
2 Correct 9 ms 14336 KB Output is correct
3 Correct 14 ms 14464 KB Output is correct
4 Correct 18 ms 14444 KB Output is correct
5 Correct 17 ms 14436 KB Output is correct
6 Correct 18 ms 14464 KB Output is correct
7 Correct 16 ms 14460 KB Output is correct
8 Correct 15 ms 14436 KB Output is correct
9 Correct 17 ms 14436 KB Output is correct
10 Correct 17 ms 14436 KB Output is correct

Subtask #2
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 14464 KB Output is correct
2 Correct 16 ms 14520 KB Output is correct
3 Incorrect 17 ms 14384 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 14464 KB Output is correct
2 Correct 9 ms 14336 KB Output is correct
3 Correct 14 ms 14464 KB Output is correct
4 Correct 18 ms 14444 KB Output is correct
5 Correct 17 ms 14436 KB Output is correct
6 Correct 18 ms 14464 KB Output is correct
7 Correct 16 ms 14460 KB Output is correct
8 Correct 15 ms 14436 KB Output is correct
9 Correct 17 ms 14436 KB Output is correct
10 Correct 17 ms 14436 KB Output is correct
11 Correct 17 ms 14464 KB Output is correct
12 Correct 16 ms 14520 KB Output is correct
13 Incorrect 17 ms 14384 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #4
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 14464 KB Output is correct
2 Correct 9 ms 14336 KB Output is correct
3 Correct 14 ms 14464 KB Output is correct
4 Correct 18 ms 14444 KB Output is correct
5 Correct 17 ms 14436 KB Output is correct
6 Correct 18 ms 14464 KB Output is correct
7 Correct 16 ms 14460 KB Output is correct
8 Correct 15 ms 14436 KB Output is correct
9 Correct 17 ms 14436 KB Output is correct
10 Correct 17 ms 14436 KB Output is correct
11 Correct 17 ms 14464 KB Output is correct
12 Correct 16 ms 14520 KB Output is correct
13 Incorrect 17 ms 14384 KB Output isn't correct
14 Halted 0 ms 0 KB -