oj.uz

Submission #252151

# Submission time Handle Problem Language Result Execution time Memory
252151 2020-07-24T11:14:52 Z Vimmer Uzastopni (COCI15_uzastopni) C++14
80 / 160
 301 ms 34044 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], nul;

void dfs(int v)
{
    bitset <105> can[105];

    for (int i = 0; i < 105; i++) can[i] = nul;

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

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

        for (int l = 1; l < 105; l++)
          for (int r = l; r < 105; r++)
            if (f[it][l][r]) can[l][r] = 1;
    }

    for (int l = 104; l >= 0; l--)
        for (int r = l; r < 104; r++)
          if (can[l][r]) can[l] |= can[r + 1];

    for (int l = 0; l < 105; l++)
        for (int r = 0; r < 105; 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 3 ms 768 KB Output is correct
3 Incorrect 3 ms 768 KB Output isn't correct
4 Incorrect 3 ms 768 KB Output isn't correct
5 Incorrect 3 ms 768 KB Output isn't correct
6 Correct 3 ms 896 KB Output is correct
7 Correct 3 ms 896 KB Output is correct
8 Correct 4 ms 896 KB Output is correct
9 Correct 4 ms 768 KB Output is correct
10 Correct 3 ms 768 KB Output is correct
11 Incorrect 278 ms 17400 KB Output isn't correct
12 Incorrect 275 ms 17400 KB Output isn't correct
13 Correct 274 ms 17404 KB Output is correct
14 Runtime error 294 ms 34040 KB Memory limit exceeded
15 Runtime error 301 ms 34044 KB Memory limit exceeded
16 Runtime error 293 ms 33912 KB Memory limit exceeded
17 Correct 276 ms 17400 KB Output is correct
18 Correct 279 ms 17400 KB Output is correct
19 Incorrect 284 ms 17264 KB Output isn't correct
20 Incorrect 282 ms 17264 KB Output isn't correct