답안 #772999

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
772999	2023-07-04T13:56:26 Z	davitmarg	Power Plant (JOI20_power)	C++17	47 / 100	1500 ms	20636 KB

power

/*
DavitMarg
In pr honky-tonk,
Down in Mexico
*/
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <algorithm>
#include <cmath>
#include <vector>
#include <string>
#include <cstring>
#include <map>
#include <unordered_map>
#include <set>
#include <unordered_set>
#include <queue>
#include <bitset>
#include <stack>
#include <cassert>
#include <iterator>
#include <random>
#include <chrono>
#define mod 1000000007ll
#define LL long long
#define LD long double
#define MP make_pair    
#define PB push_back
#define all(v) v.begin(), v.end()
#define fastIO ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
using namespace std;

const int N = 500005;

int n;
string s;
vector<int> g[N];
int dp[N];

int dfs(int v, int p, bool start = false)
{
    dp[v] = s[v] - '0';
    int sum = 0;
    int mx = 0;
    for(int i = 0; i < g[v].size(); i++)
    {
        int to = g[v][i];
        if(to == p)
            continue;
        sum += dfs(to, v);
        mx = max(dp[to], mx);
    }
    dp[v] = max(dp[v], sum - (s[v] - '0'));
    if(start)
        dp[v] = max(dp[v], (s[v] - '0') + mx);
    return dp[v];
}

LL myRand()
{
    return ((LL)rand() << 16) + rand();
}

void solve()
{
    cin >> n;
    for(int i = 1; i <= n - 1; i++)
    {
        int a, b;
        cin >> a >> b;
        g[a].PB(b);
        g[b].PB(a);
    }
    cin>>s;
    s = '#' + s;
    int ans = 0;

    vector<int> p;
    for(int i = 1; i <= n; i++)
        if(s[i] == '1')
            p.PB(i);

    srand(69);
    for(int i = 0; i < 320; i++)
    {
        int v = p[myRand() % p.size()];
        ans = max(ans, dfs(v, -1, true));
    }
    cout<<ans<<endl;
}

int main()
{
    fastIO;
    int T = 1;
    //cin >> T;
    while (T--)
    {
        solve();
    }

    return 0;
}

/*


cd /mnt/d/Davit/Projects/VSCode; g++ -std=c++17 -O2 -Wall -Wextra -Ddeath -Wshadow source.cpp -o orz; ./orz; rm orz

*/

Compilation message

power.cpp: In function 'int dfs(int, int, bool)':
power.cpp:45:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |     for(int i = 0; i < g[v].size(); i++)
      |                    ~~^~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	11988 KB	Output is correct
2	Correct	5 ms	11984 KB	Output is correct
3	Correct	5 ms	11988 KB	Output is correct
4	Correct	5 ms	12068 KB	Output is correct
5	Correct	4 ms	11988 KB	Output is correct
6	Correct	5 ms	11988 KB	Output is correct
7	Correct	5 ms	11988 KB	Output is correct
8	Correct	5 ms	11988 KB	Output is correct
9	Correct	5 ms	11988 KB	Output is correct
10	Correct	5 ms	11988 KB	Output is correct
11	Correct	5 ms	11988 KB	Output is correct
12	Correct	5 ms	11988 KB	Output is correct
13	Correct	5 ms	11988 KB	Output is correct
14	Correct	5 ms	11988 KB	Output is correct
15	Correct	6 ms	11988 KB	Output is correct
16	Correct	5 ms	11988 KB	Output is correct
17	Correct	5 ms	11988 KB	Output is correct
18	Correct	5 ms	11988 KB	Output is correct
19	Correct	5 ms	11988 KB	Output is correct
20	Correct	7 ms	11988 KB	Output is correct
21	Correct	5 ms	11988 KB	Output is correct

Subtask #2
41.0 / 41.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	11988 KB	Output is correct
2	Correct	5 ms	11984 KB	Output is correct
3	Correct	5 ms	11988 KB	Output is correct
4	Correct	5 ms	12068 KB	Output is correct
5	Correct	4 ms	11988 KB	Output is correct
6	Correct	5 ms	11988 KB	Output is correct
7	Correct	5 ms	11988 KB	Output is correct
8	Correct	5 ms	11988 KB	Output is correct
9	Correct	5 ms	11988 KB	Output is correct
10	Correct	5 ms	11988 KB	Output is correct
11	Correct	5 ms	11988 KB	Output is correct
12	Correct	5 ms	11988 KB	Output is correct
13	Correct	5 ms	11988 KB	Output is correct
14	Correct	5 ms	11988 KB	Output is correct
15	Correct	6 ms	11988 KB	Output is correct
16	Correct	5 ms	11988 KB	Output is correct
17	Correct	5 ms	11988 KB	Output is correct
18	Correct	5 ms	11988 KB	Output is correct
19	Correct	5 ms	11988 KB	Output is correct
20	Correct	7 ms	11988 KB	Output is correct
21	Correct	5 ms	11988 KB	Output is correct
22	Correct	13 ms	12116 KB	Output is correct
23	Correct	12 ms	12116 KB	Output is correct
24	Correct	13 ms	12164 KB	Output is correct
25	Correct	16 ms	12116 KB	Output is correct
26	Correct	13 ms	12112 KB	Output is correct
27	Correct	13 ms	12116 KB	Output is correct
28	Correct	13 ms	12116 KB	Output is correct
29	Correct	16 ms	12340 KB	Output is correct
30	Correct	15 ms	12332 KB	Output is correct
31	Correct	12 ms	12116 KB	Output is correct
32	Correct	12 ms	12116 KB	Output is correct
33	Correct	13 ms	12116 KB	Output is correct
34	Correct	13 ms	12028 KB	Output is correct
35	Correct	13 ms	12060 KB	Output is correct
36	Correct	16 ms	12156 KB	Output is correct
37	Correct	12 ms	12164 KB	Output is correct
38	Correct	12 ms	12116 KB	Output is correct
39	Correct	14 ms	12244 KB	Output is correct
40	Correct	14 ms	12240 KB	Output is correct
41	Correct	14 ms	12236 KB	Output is correct
42	Correct	14 ms	12116 KB	Output is correct
43	Correct	13 ms	12116 KB	Output is correct
44	Correct	16 ms	12116 KB	Output is correct
45	Correct	13 ms	12116 KB	Output is correct
46	Correct	13 ms	12192 KB	Output is correct
47	Correct	12 ms	12116 KB	Output is correct
48	Correct	13 ms	12244 KB	Output is correct
49	Correct	13 ms	12256 KB	Output is correct
50	Correct	13 ms	12152 KB	Output is correct
51	Correct	12 ms	12116 KB	Output is correct
52	Correct	12 ms	12176 KB	Output is correct
53	Correct	12 ms	12220 KB	Output is correct
54	Correct	15 ms	12172 KB	Output is correct
55	Correct	12 ms	12116 KB	Output is correct
56	Correct	11 ms	12124 KB	Output is correct
57	Correct	15 ms	12328 KB	Output is correct
58	Correct	10 ms	12116 KB	Output is correct
59	Correct	10 ms	12168 KB	Output is correct
60	Correct	16 ms	12244 KB	Output is correct
61	Correct	12 ms	12116 KB	Output is correct
62	Correct	16 ms	12328 KB	Output is correct
63	Correct	12 ms	12128 KB	Output is correct

Subtask #3
0.0 / 53.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	11988 KB	Output is correct
2	Correct	5 ms	11984 KB	Output is correct
3	Correct	5 ms	11988 KB	Output is correct
4	Correct	5 ms	12068 KB	Output is correct
5	Correct	4 ms	11988 KB	Output is correct
6	Correct	5 ms	11988 KB	Output is correct
7	Correct	5 ms	11988 KB	Output is correct
8	Correct	5 ms	11988 KB	Output is correct
9	Correct	5 ms	11988 KB	Output is correct
10	Correct	5 ms	11988 KB	Output is correct
11	Correct	5 ms	11988 KB	Output is correct
12	Correct	5 ms	11988 KB	Output is correct
13	Correct	5 ms	11988 KB	Output is correct
14	Correct	5 ms	11988 KB	Output is correct
15	Correct	6 ms	11988 KB	Output is correct
16	Correct	5 ms	11988 KB	Output is correct
17	Correct	5 ms	11988 KB	Output is correct
18	Correct	5 ms	11988 KB	Output is correct
19	Correct	5 ms	11988 KB	Output is correct
20	Correct	7 ms	11988 KB	Output is correct
21	Correct	5 ms	11988 KB	Output is correct
22	Correct	13 ms	12116 KB	Output is correct
23	Correct	12 ms	12116 KB	Output is correct
24	Correct	13 ms	12164 KB	Output is correct
25	Correct	16 ms	12116 KB	Output is correct
26	Correct	13 ms	12112 KB	Output is correct
27	Correct	13 ms	12116 KB	Output is correct
28	Correct	13 ms	12116 KB	Output is correct
29	Correct	16 ms	12340 KB	Output is correct
30	Correct	15 ms	12332 KB	Output is correct
31	Correct	12 ms	12116 KB	Output is correct
32	Correct	12 ms	12116 KB	Output is correct
33	Correct	13 ms	12116 KB	Output is correct
34	Correct	13 ms	12028 KB	Output is correct
35	Correct	13 ms	12060 KB	Output is correct
36	Correct	16 ms	12156 KB	Output is correct
37	Correct	12 ms	12164 KB	Output is correct
38	Correct	12 ms	12116 KB	Output is correct
39	Correct	14 ms	12244 KB	Output is correct
40	Correct	14 ms	12240 KB	Output is correct
41	Correct	14 ms	12236 KB	Output is correct
42	Correct	14 ms	12116 KB	Output is correct
43	Correct	13 ms	12116 KB	Output is correct
44	Correct	16 ms	12116 KB	Output is correct
45	Correct	13 ms	12116 KB	Output is correct
46	Correct	13 ms	12192 KB	Output is correct
47	Correct	12 ms	12116 KB	Output is correct
48	Correct	13 ms	12244 KB	Output is correct
49	Correct	13 ms	12256 KB	Output is correct
50	Correct	13 ms	12152 KB	Output is correct
51	Correct	12 ms	12116 KB	Output is correct
52	Correct	12 ms	12176 KB	Output is correct
53	Correct	12 ms	12220 KB	Output is correct
54	Correct	15 ms	12172 KB	Output is correct
55	Correct	12 ms	12116 KB	Output is correct
56	Correct	11 ms	12124 KB	Output is correct
57	Correct	15 ms	12328 KB	Output is correct
58	Correct	10 ms	12116 KB	Output is correct
59	Correct	10 ms	12168 KB	Output is correct
60	Correct	16 ms	12244 KB	Output is correct
61	Correct	12 ms	12116 KB	Output is correct
62	Correct	16 ms	12328 KB	Output is correct
63	Correct	12 ms	12128 KB	Output is correct
64	Execution timed out	1582 ms	20636 KB	Time limit exceeded
65	Halted	0 ms	0 KB	-

답안 #772999

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 41.0 / 41.0

Subtask #3 0.0 / 53.0

Subtask #1
6.0 / 6.0

Subtask #2
41.0 / 41.0

Subtask #3
0.0 / 53.0