oj.uz

Submission #252157

# Submission time Handle Problem Language Result Execution time Memory
252157 2020-07-24T11:44:28 Z Vimmer Uzastopni (COCI15_uzastopni) C++14
80 / 160
 162 ms 17840 KB 
#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>

//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("fast-math")
//#pragma GCC optimize("no-stack-protector")

#define F first
#define S second
#define sz(x) int(x.size())
#define pb push_back
#define pf push_front
#define N 10005
#define M ll(998244353)
#define inf 1e9 + 1e9

using namespace std;
//using namespace __gnu_pbds;

typedef long double ld;
typedef long long ll;
typedef unsigned long long ull;
typedef short int si;
typedef array <ll, 3> a3;
typedef array <ll, 4> a4;

//typedef tree <int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

int a[N], n;

vector <int> g[N];

bitset <105> f[N][105], can[105];

void dfs(int v)
{
    for (auto it : g[v]) dfs(it);

    for (int i = 0; i < 105; i++) {f[v][i].reset(); can[i].reset();}

    can[a[v]][a[v]] = 1;

    for (auto it : g[v])
        for (int i = 0; i < 105; i++) can[i] |= f[it][i];

    for (int l = 99; l >= 1; l--)
        for (int r = l; r <= 99; r++)
          if (can[l][r]) can[l] |= can[r + 1];

    for (int l = 1; l <= 100; l++)
        for (int r = 1; r <= 100; r++)
            if (can[l][r] && l <= a[v] && a[v] <= r) f[v][l][r] = 1;
}
int main()
{
    //freopen("input.txt", "r", stdin); //freopen("output4.txt", "w", stdout);

    ios_base::sync_with_stdio(0); istream::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    cin >> n;

    for (int i = 1; i <= n; i++) cin >> a[i];

    for (int i = 1; i < n; i++)
    {
        int x, y;

        cin >> x >> y;

        g[x].pb(y);
    }

    dfs(1);

    int ans = 0;

    for (int l = 1; l <= 100; l++)
        for (int r = l; r <= 100; r++) ans += f[1][l][r];

    cout << ans << endl;
}

Subtask #1
80.0 / 160.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 640 KB Output is correct
2 Correct 2 ms 640 KB Output is correct
3 Incorrect 2 ms 768 KB Output isn't correct
4 Incorrect 2 ms 768 KB Output isn't correct
5 Incorrect 2 ms 768 KB Output isn't correct
6 Correct 2 ms 768 KB Output is correct
7 Correct 2 ms 768 KB Output is correct
8 Correct 2 ms 768 KB Output is correct
9 Correct 2 ms 768 KB Output is correct
10 Correct 2 ms 768 KB Output is correct
11 Incorrect 147 ms 17272 KB Output isn't correct
12 Incorrect 157 ms 17232 KB Output isn't correct
13 Correct 154 ms 17272 KB Output is correct
14 Incorrect 149 ms 17784 KB Output isn't correct
15 Incorrect 152 ms 17784 KB Output isn't correct
16 Incorrect 162 ms 17840 KB Output isn't correct
17 Correct 154 ms 17276 KB Output is correct
18 Correct 154 ms 17144 KB Output is correct
19 Incorrect 144 ms 17144 KB Output isn't correct
20 Incorrect 157 ms 17196 KB Output isn't correct