oj.uz

Submission #772609

# Submission time Handle Problem Language Result Execution time Memory
772609 2023-07-04T08:59:56 Z CyberCow Power Plant (JOI20_power) C++17
47 / 100
 22 ms 16244 KB 
//#include <bits/stdc++.h>
#include <random>
#include <algorithm>
#include <bitset>
#include <chrono>
#include <cmath>
#include <deque>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <iterator>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <vector>
#include <chrono>
#define fr first
#define sc second
#define ad push_back
using namespace std;
using ll = long long;
mt19937 rnd(348502);
const int N = 2005;
int n;
vector<int> v[N];
int dp[N][N], a[N];

void Dfs(int g, int p)
{
    for (auto to : v[g])
    {
        if (to != p)
        {
            Dfs(to, g);
        }
    }
    if (a[g] == 0)
    {
        int gum = 0;
        for (auto to : v[g])
        {
            if (to != p)
            {
                int ma = 0;
                for (int i = 0; i <= n; i++)
                {
                    dp[g][i] = max(dp[g][i], dp[to][i]);
                    ma = max(ma, dp[to][i] - 2 * i);
                }
                gum += ma;
            }
        }
        dp[g][0] = max(gum, dp[g][0]);
    }
    else
    {
        int gum = 0;
        for (auto to : v[g])
        {
            if (to != p)
            {
                int ma = 0;
                for (int i = 0; i <= n; i++)
                {
                    dp[g][1] = max(dp[g][1], dp[to][i] - 2 * i + 1);
                    dp[g][i + 1] = max(dp[to][i], dp[g][i + 1]);
                    ma = max(ma, dp[to][i] - 2 * i);
                }
                gum += ma;
            }
        }
        dp[g][0] = max(dp[g][0], gum - 1);
        dp[g][0] = max(dp[g][0], 1);
    }
}

void solve()
{
    int i, j, x, y;
    cin >> n;
    for ( i = 0; i < n - 1; i++)
    {
        cin >> x >> y;
        v[x].push_back(y);
        v[y].push_back(x);
    }
    char c;
    for ( i = 1; i <= n; i++)
    {
        cin >> c;
        a[i] = c - '0';
    }
    Dfs(1, -1);
    int ans = 0;
    for (int i = 0; i <= n; i++)
    {
        ans = max(dp[1][i], ans);
    }
    cout << ans;
}


int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int tt = 1;
    //cin >> tt;
    while (tt--) {
        solve();
    }
    return 0;
}

Compilation message

power.cpp: In function 'void solve()':
power.cpp:83:12: warning: unused variable 'j' [-Wunused-variable]
   83 |     int i, j, x, y;
      |            ^

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 380 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 380 KB Output is correct
19 Correct 0 ms 380 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 380 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 380 KB Output is correct
19 Correct 0 ms 380 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 20 ms 13012 KB Output is correct
23 Correct 19 ms 13000 KB Output is correct
24 Correct 17 ms 13012 KB Output is correct
25 Correct 13 ms 12884 KB Output is correct
26 Correct 13 ms 12940 KB Output is correct
27 Correct 12 ms 13012 KB Output is correct
28 Correct 13 ms 13012 KB Output is correct
29 Correct 21 ms 16244 KB Output is correct
30 Correct 18 ms 16212 KB Output is correct
31 Correct 20 ms 12248 KB Output is correct
32 Correct 16 ms 12244 KB Output is correct
33 Correct 20 ms 14156 KB Output is correct
34 Correct 17 ms 14164 KB Output is correct
35 Correct 14 ms 14164 KB Output is correct
36 Correct 13 ms 14160 KB Output is correct
37 Correct 18 ms 11496 KB Output is correct
38 Correct 15 ms 12372 KB Output is correct
39 Correct 21 ms 13584 KB Output is correct
40 Correct 16 ms 13540 KB Output is correct
41 Correct 14 ms 13516 KB Output is correct
42 Correct 16 ms 13132 KB Output is correct
43 Correct 13 ms 13140 KB Output is correct
44 Correct 22 ms 12256 KB Output is correct
45 Correct 18 ms 12244 KB Output is correct
46 Correct 15 ms 12228 KB Output is correct
47 Correct 15 ms 12200 KB Output is correct
48 Correct 16 ms 12300 KB Output is correct
49 Correct 16 ms 12376 KB Output is correct
50 Correct 15 ms 12372 KB Output is correct
51 Correct 15 ms 12372 KB Output is correct
52 Correct 16 ms 12500 KB Output is correct
53 Correct 20 ms 11852 KB Output is correct
54 Correct 20 ms 12244 KB Output is correct
55 Correct 20 ms 12492 KB Output is correct
56 Correct 18 ms 8404 KB Output is correct
57 Correct 17 ms 16156 KB Output is correct
58 Correct 18 ms 8532 KB Output is correct
59 Correct 15 ms 8428 KB Output is correct
60 Correct 18 ms 16180 KB Output is correct
61 Correct 10 ms 8448 KB Output is correct
62 Correct 14 ms 16212 KB Output is correct
63 Correct 20 ms 10960 KB Output is correct

Subtask #3
0.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 380 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 380 KB Output is correct
19 Correct 0 ms 380 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 20 ms 13012 KB Output is correct
23 Correct 19 ms 13000 KB Output is correct
24 Correct 17 ms 13012 KB Output is correct
25 Correct 13 ms 12884 KB Output is correct
26 Correct 13 ms 12940 KB Output is correct
27 Correct 12 ms 13012 KB Output is correct
28 Correct 13 ms 13012 KB Output is correct
29 Correct 21 ms 16244 KB Output is correct
30 Correct 18 ms 16212 KB Output is correct
31 Correct 20 ms 12248 KB Output is correct
32 Correct 16 ms 12244 KB Output is correct
33 Correct 20 ms 14156 KB Output is correct
34 Correct 17 ms 14164 KB Output is correct
35 Correct 14 ms 14164 KB Output is correct
36 Correct 13 ms 14160 KB Output is correct
37 Correct 18 ms 11496 KB Output is correct
38 Correct 15 ms 12372 KB Output is correct
39 Correct 21 ms 13584 KB Output is correct
40 Correct 16 ms 13540 KB Output is correct
41 Correct 14 ms 13516 KB Output is correct
42 Correct 16 ms 13132 KB Output is correct
43 Correct 13 ms 13140 KB Output is correct
44 Correct 22 ms 12256 KB Output is correct
45 Correct 18 ms 12244 KB Output is correct
46 Correct 15 ms 12228 KB Output is correct
47 Correct 15 ms 12200 KB Output is correct
48 Correct 16 ms 12300 KB Output is correct
49 Correct 16 ms 12376 KB Output is correct
50 Correct 15 ms 12372 KB Output is correct
51 Correct 15 ms 12372 KB Output is correct
52 Correct 16 ms 12500 KB Output is correct
53 Correct 20 ms 11852 KB Output is correct
54 Correct 20 ms 12244 KB Output is correct
55 Correct 20 ms 12492 KB Output is correct
56 Correct 18 ms 8404 KB Output is correct
57 Correct 17 ms 16156 KB Output is correct
58 Correct 18 ms 8532 KB Output is correct
59 Correct 15 ms 8428 KB Output is correct
60 Correct 18 ms 16180 KB Output is correct
61 Correct 10 ms 8448 KB Output is correct
62 Correct 14 ms 16212 KB Output is correct
63 Correct 20 ms 10960 KB Output is correct
64 Runtime error 1 ms 596 KB Execution killed with signal 11
65 Halted 0 ms 0 KB -