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Submission #827433

# Submission time Handle Problem Language Result Execution time Memory
827433 2023-08-16T13:09:58 Z tset Power Plant (JOI20_power) C++14
100 / 100
 155 ms 42188 KB 
#include<bits/stdc++.h>
using namespace std;
#define int long long

vector<vector<int > > nxt;
vector<int > pereDe; 
vector<vector<int > > filsDe;
vector<int > dp;
string isPower;
int ansFinale = 0;


void dfsInit(int nde, int prc)
{
    pereDe[nde] = prc;
    for(int iV : nxt[nde])
    {
        if(iV != prc)
        {
            filsDe[nde].push_back(iV);
            dfsInit(iV, nde);
        }
    }
}

int fDp(int nde)
{
    bool isNdePower = isPower[nde] == '1'? true : false;
    if(dp[nde] != -1)
    {
        return dp[nde];
    }
    int ans = 0;
    int ansSortant = 0;
    for(int iF : filsDe[nde])
    {
        int resFils = fDp(iF);
        if(isNdePower)
        {
            ansFinale = max(ansFinale, resFils +1);// On s'arrete ici.
        }
        ansSortant += resFils;
    }
    if(isNdePower)
    {
        ans = max(ans, ansSortant-1);
        ans = max(ans, 1ll);
    }
    else
    {
        ans = max(ans, ansSortant);
    }
    dp[nde] = ans;
    return ans;
}

signed main()
{
    int N;
    scanf("%lld", &N);
    int nbArcs = N-1;
    nxt.resize(N);
    pereDe.resize(N); 
    filsDe.resize(N);
    dp.assign(N, -1);
    for(int iArc = 0; iArc < nbArcs; iArc++)
    {
        int u, v;
        scanf("%lld%lld\n", &u, &v);
        --u; --v;
        nxt[u].push_back(v);
        nxt[v].push_back(u);
    }

    int root = 0;
    dfsInit(root, root);

    cin >> isPower;
    int ans = fDp(root);
    printf("%lld\n", max(ans, ansFinale));
}

Compilation message

power.cpp: In function 'int main()':
power.cpp:60:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   60 |     scanf("%lld", &N);
      |     ~~~~~^~~~~~~~~~~~
power.cpp:69:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   69 |         scanf("%lld%lld\n", &u, &v);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 280 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 296 KB Output is correct
13 Correct 0 ms 300 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 300 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 280 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 296 KB Output is correct
13 Correct 0 ms 300 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 300 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 440 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 468 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 1 ms 596 KB Output is correct
30 Correct 1 ms 596 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 1 ms 468 KB Output is correct
33 Correct 1 ms 468 KB Output is correct
34 Correct 1 ms 468 KB Output is correct
35 Correct 1 ms 564 KB Output is correct
36 Correct 1 ms 468 KB Output is correct
37 Correct 1 ms 468 KB Output is correct
38 Correct 1 ms 468 KB Output is correct
39 Correct 1 ms 596 KB Output is correct
40 Correct 1 ms 596 KB Output is correct
41 Correct 1 ms 596 KB Output is correct
42 Correct 1 ms 596 KB Output is correct
43 Correct 2 ms 468 KB Output is correct
44 Correct 1 ms 596 KB Output is correct
45 Correct 2 ms 596 KB Output is correct
46 Correct 1 ms 468 KB Output is correct
47 Correct 1 ms 468 KB Output is correct
48 Correct 1 ms 596 KB Output is correct
49 Correct 1 ms 636 KB Output is correct
50 Correct 1 ms 596 KB Output is correct
51 Correct 1 ms 504 KB Output is correct
52 Correct 1 ms 468 KB Output is correct
53 Correct 1 ms 596 KB Output is correct
54 Correct 1 ms 468 KB Output is correct
55 Correct 1 ms 468 KB Output is correct
56 Correct 1 ms 468 KB Output is correct
57 Correct 1 ms 596 KB Output is correct
58 Correct 1 ms 468 KB Output is correct
59 Correct 1 ms 468 KB Output is correct
60 Correct 1 ms 596 KB Output is correct
61 Correct 2 ms 476 KB Output is correct
62 Correct 2 ms 596 KB Output is correct
63 Correct 1 ms 468 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 280 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 296 KB Output is correct
13 Correct 0 ms 300 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 300 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 440 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 468 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 1 ms 596 KB Output is correct
30 Correct 1 ms 596 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 1 ms 468 KB Output is correct
33 Correct 1 ms 468 KB Output is correct
34 Correct 1 ms 468 KB Output is correct
35 Correct 1 ms 564 KB Output is correct
36 Correct 1 ms 468 KB Output is correct
37 Correct 1 ms 468 KB Output is correct
38 Correct 1 ms 468 KB Output is correct
39 Correct 1 ms 596 KB Output is correct
40 Correct 1 ms 596 KB Output is correct
41 Correct 1 ms 596 KB Output is correct
42 Correct 1 ms 596 KB Output is correct
43 Correct 2 ms 468 KB Output is correct
44 Correct 1 ms 596 KB Output is correct
45 Correct 2 ms 596 KB Output is correct
46 Correct 1 ms 468 KB Output is correct
47 Correct 1 ms 468 KB Output is correct
48 Correct 1 ms 596 KB Output is correct
49 Correct 1 ms 636 KB Output is correct
50 Correct 1 ms 596 KB Output is correct
51 Correct 1 ms 504 KB Output is correct
52 Correct 1 ms 468 KB Output is correct
53 Correct 1 ms 596 KB Output is correct
54 Correct 1 ms 468 KB Output is correct
55 Correct 1 ms 468 KB Output is correct
56 Correct 1 ms 468 KB Output is correct
57 Correct 1 ms 596 KB Output is correct
58 Correct 1 ms 468 KB Output is correct
59 Correct 1 ms 468 KB Output is correct
60 Correct 1 ms 596 KB Output is correct
61 Correct 2 ms 476 KB Output is correct
62 Correct 2 ms 596 KB Output is correct
63 Correct 1 ms 468 KB Output is correct
64 Correct 128 ms 27220 KB Output is correct
65 Correct 125 ms 27252 KB Output is correct
66 Correct 147 ms 27296 KB Output is correct
67 Correct 128 ms 27204 KB Output is correct
68 Correct 136 ms 27228 KB Output is correct
69 Correct 120 ms 27196 KB Output is correct
70 Correct 133 ms 27360 KB Output is correct
71 Correct 141 ms 27228 KB Output is correct
72 Correct 133 ms 27228 KB Output is correct
73 Correct 138 ms 41124 KB Output is correct
74 Correct 155 ms 41020 KB Output is correct
75 Correct 134 ms 26896 KB Output is correct
76 Correct 122 ms 26892 KB Output is correct
77 Correct 117 ms 27648 KB Output is correct
78 Correct 152 ms 27584 KB Output is correct
79 Correct 137 ms 27716 KB Output is correct
80 Correct 135 ms 27600 KB Output is correct
81 Correct 100 ms 26528 KB Output is correct
82 Correct 108 ms 26856 KB Output is correct
83 Correct 145 ms 32740 KB Output is correct
84 Correct 152 ms 34636 KB Output is correct
85 Correct 136 ms 34336 KB Output is correct
86 Correct 125 ms 28612 KB Output is correct
87 Correct 123 ms 28028 KB Output is correct
88 Correct 111 ms 28440 KB Output is correct
89 Correct 111 ms 28480 KB Output is correct
90 Correct 116 ms 28320 KB Output is correct
91 Correct 116 ms 28548 KB Output is correct
92 Correct 122 ms 28820 KB Output is correct
93 Correct 109 ms 30708 KB Output is correct
94 Correct 123 ms 32280 KB Output is correct
95 Correct 112 ms 30932 KB Output is correct
96 Correct 107 ms 29244 KB Output is correct
97 Correct 111 ms 27920 KB Output is correct
98 Correct 120 ms 27684 KB Output is correct
99 Correct 110 ms 27568 KB Output is correct
100 Correct 114 ms 30160 KB Output is correct
101 Correct 120 ms 28064 KB Output is correct
102 Correct 103 ms 27628 KB Output is correct
103 Correct 111 ms 27900 KB Output is correct
104 Correct 70 ms 26432 KB Output is correct
105 Correct 149 ms 37924 KB Output is correct
106 Correct 71 ms 26300 KB Output is correct
107 Correct 80 ms 26256 KB Output is correct
108 Correct 145 ms 41860 KB Output is correct
109 Correct 78 ms 26480 KB Output is correct
110 Correct 130 ms 42188 KB Output is correct
111 Correct 109 ms 26256 KB Output is correct