oj.uz

답안 #675480

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
675480 2022-12-27T10:32:07 Z messiuuuuu Uzastopni (COCI15_uzastopni) C++17
136 / 160
 214 ms 65536 KB 
///
#include<bits/stdc++.h>
#define task "C"
#define ll long long
#define ld long double
#define fi first
#define se second
#define pb push_back
using namespace std;
const int MAXN = 1e4 + 5;
const ll INF = 1e18 + 5;

int n;
int c[MAXN];
vector<int> Adj[MAXN];

void Input()
{
    cin >> n;
    for (int i = 1; i <= n; i++)
        cin >> c[i];
    for (int i = 1; i < n; i++)
    {
        int u, v;
        cin >> u >> v;
        Adj[u].pb(v);
        Adj[v].pb(u);
    }
}

bitset<105> dp[MAXN][105], t[105];

void DFS(int u, int par)
{
    vector<int> pl[105], pr[105];
    for (int v : Adj[u])
    {
        if (v == par)
            continue;
        DFS(v, u);
        for (int l = 1; l <= 100; l++)
            for (int r = l; r <= 100; r++)
                if (dp[v][l][r])
                {
                    pl[l].pb(r);
                    pr[r].pb(l);
                }
    }
    for (int i = 1; i <= 100; i++)
        t[i].reset();
    vector<int> lf, rg;
    t[c[u]] = 1;
    lf.pb(c[u]);
    rg.pb(c[u]);
    for (int i = 100; i >= c[u] + 1; i--)
    {
        for (int j : pl[i])
        {
            t[i][j] = 1;
            t[i] |= t[j + 1];
        }
        if (i == c[u] + 1)
        {
            for (int j = 1; j <= 100; j++)
                if (t[i][j])
                    rg.pb(j);
        }
    }
    for (int i = 1; i <= c[u] - 1; i++)
    {
        for (int j : pr[i])
        {
            t[i][j] = 1;
            t[i] |= t[j - 1];
        }
        if (i == c[u] - 1)
        {
            for (int j = 1; j <= 100; j++)
                if (t[i][j])
                    lf.pb(j);
        }
    }
    for (int x : lf)
    {
        for (int y : rg)
        {
            dp[u][x][y] = 1;
        }
    }
}

void Solve()
{
    DFS(1, 0);
    int res = 0;
    for (int i = 1; i <= 100; i++)
    {
        for (int j = i; j <= 100; j++)
        {
            //if (dp[1][i][j])
             //   cout << i << ' ' << j << '\n';
            res += dp[1][i][j];
        }
    }
    cout << res;
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    if (fopen(task".INP","r"))
    {
        freopen(task".INP","r",stdin);
        //freopen(task".OUT","w",stdout);
    }
    Input();
    Solve();
}

Compilation message

uzastopni.cpp: In function 'int main()':
uzastopni.cpp:114:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  114 |         freopen(task".INP","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
136.0 / 160.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 2 ms 656 KB Output is correct
3 Correct 2 ms 724 KB Output is correct
4 Correct 2 ms 724 KB Output is correct
5 Correct 2 ms 724 KB Output is correct
6 Correct 3 ms 980 KB Output is correct
7 Correct 2 ms 1108 KB Output is correct
8 Correct 4 ms 1108 KB Output is correct
9 Correct 2 ms 724 KB Output is correct
10 Correct 3 ms 724 KB Output is correct
11 Correct 172 ms 17372 KB Output is correct
12 Correct 176 ms 17440 KB Output is correct
13 Correct 171 ms 17396 KB Output is correct
14 Runtime error 214 ms 65536 KB Execution killed with signal 9
15 Runtime error 211 ms 65536 KB Execution killed with signal 9
16 Runtime error 210 ms 65536 KB Execution killed with signal 9
17 Correct 173 ms 17408 KB Output is correct
18 Correct 174 ms 17460 KB Output is correct
19 Correct 172 ms 17764 KB Output is correct
20 Correct 174 ms 17608 KB Output is correct