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Submission #997420

# Submission time Handle Problem Language Result Execution time Memory
997420 2024-06-12T09:38:52 Z Trisanu_Das September (APIO24_september) C++17
45 / 100
 134 ms 37736 KB 
#include "september.h"
#include <bits/stdc++.h>
#define INF 1e18
using namespace std;
typedef long long ll;

vector<int> adj[800005];
int dp[800005];

void dfs(int s, int e) {
    for (auto u : adj[s]) {
        if (u == e) continue;
        dfs(u, s);
        dp[s] = max(dp[s], dp[u]);
    }
}

int solve(int N, int M, vector<int> F, vector<vector<int>> S) {
    for (int i = 0; i < N; i++) {
        adj[i].clear();
        dp[i] = 0;
    }
    for (int i = 1; i < N; i++) {
        adj[i].push_back(F[i]);
        adj[F[i]].push_back(i);
    }
    for (int i = 0; i < S[0].size(); i++) dp[S[0][i]] = i;
    dfs(0, -1);
    int ans = 0, i = 0;
    while (i < S[0].size()) {
        int j = dp[S[0][i]];
        int maxn = dp[S[0][i]];
        int k = i;
        while (k <= maxn) {
            maxn = max(maxn, dp[S[0][k]]);
            ++k;
        }
        ++ans;
        i = maxn + 1;
    }
    return ans;
}

Compilation message

september.cpp: In function 'int solve(int, int, std::vector<int>, std::vector<std::vector<int> >)':
september.cpp:27:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     for (int i = 0; i < S[0].size(); i++) dp[S[0][i]] = i;
      |                     ~~^~~~~~~~~~~~~
september.cpp:30:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |     while (i < S[0].size()) {
      |            ~~^~~~~~~~~~~~~
september.cpp:31:13: warning: unused variable 'j' [-Wunused-variable]
   31 |         int j = dp[S[0][i]];
      |             ^

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 20056 KB Output is correct
2 Correct 3 ms 20060 KB Output is correct
3 Correct 3 ms 20060 KB Output is correct
4 Correct 4 ms 20060 KB Output is correct
5 Correct 3 ms 20060 KB Output is correct
6 Correct 3 ms 20060 KB Output is correct
7 Correct 3 ms 20060 KB Output is correct

Subtask #2
0.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 20056 KB Output is correct
2 Correct 3 ms 20060 KB Output is correct
3 Correct 3 ms 20060 KB Output is correct
4 Correct 4 ms 20060 KB Output is correct
5 Correct 3 ms 20060 KB Output is correct
6 Correct 3 ms 20060 KB Output is correct
7 Correct 3 ms 20060 KB Output is correct
8 Incorrect 4 ms 20060 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 20056 KB Output is correct
2 Correct 4 ms 20060 KB Output is correct
3 Correct 4 ms 20060 KB Output is correct

Subtask #4
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 20056 KB Output is correct
2 Correct 3 ms 20060 KB Output is correct
3 Correct 3 ms 20060 KB Output is correct
4 Correct 4 ms 20060 KB Output is correct
5 Correct 3 ms 20060 KB Output is correct
6 Correct 3 ms 20060 KB Output is correct
7 Correct 3 ms 20060 KB Output is correct
8 Correct 4 ms 20056 KB Output is correct
9 Correct 4 ms 20060 KB Output is correct
10 Correct 4 ms 20060 KB Output is correct
11 Correct 4 ms 20060 KB Output is correct
12 Correct 4 ms 20060 KB Output is correct
13 Correct 4 ms 20060 KB Output is correct
14 Correct 5 ms 20060 KB Output is correct
15 Correct 4 ms 20060 KB Output is correct
16 Correct 3 ms 20060 KB Output is correct
17 Correct 4 ms 20056 KB Output is correct

Subtask #5
0.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 20056 KB Output is correct
2 Correct 4 ms 20060 KB Output is correct
3 Correct 4 ms 20060 KB Output is correct
4 Incorrect 4 ms 20316 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #6
0.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 20056 KB Output is correct
2 Correct 3 ms 20060 KB Output is correct
3 Correct 3 ms 20060 KB Output is correct
4 Correct 4 ms 20060 KB Output is correct
5 Correct 3 ms 20060 KB Output is correct
6 Correct 3 ms 20060 KB Output is correct
7 Correct 3 ms 20060 KB Output is correct
8 Incorrect 4 ms 20060 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #7
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 20056 KB Output is correct
2 Correct 4 ms 20060 KB Output is correct
3 Correct 4 ms 20060 KB Output is correct
4 Correct 112 ms 36412 KB Output is correct
5 Correct 113 ms 37736 KB Output is correct
6 Correct 108 ms 37724 KB Output is correct

Subtask #8
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 20056 KB Output is correct
2 Correct 3 ms 20060 KB Output is correct
3 Correct 3 ms 20060 KB Output is correct
4 Correct 4 ms 20060 KB Output is correct
5 Correct 3 ms 20060 KB Output is correct
6 Correct 3 ms 20060 KB Output is correct
7 Correct 3 ms 20060 KB Output is correct
8 Correct 4 ms 20056 KB Output is correct
9 Correct 4 ms 20060 KB Output is correct
10 Correct 4 ms 20060 KB Output is correct
11 Correct 4 ms 20060 KB Output is correct
12 Correct 4 ms 20060 KB Output is correct
13 Correct 4 ms 20060 KB Output is correct
14 Correct 5 ms 20060 KB Output is correct
15 Correct 4 ms 20060 KB Output is correct
16 Correct 3 ms 20060 KB Output is correct
17 Correct 4 ms 20056 KB Output is correct
18 Correct 112 ms 36412 KB Output is correct
19 Correct 113 ms 37736 KB Output is correct
20 Correct 108 ms 37724 KB Output is correct
21 Correct 120 ms 30892 KB Output is correct
22 Correct 120 ms 30008 KB Output is correct
23 Correct 111 ms 31608 KB Output is correct
24 Correct 134 ms 31664 KB Output is correct
25 Correct 116 ms 31148 KB Output is correct
26 Correct 122 ms 30896 KB Output is correct
27 Correct 105 ms 29336 KB Output is correct

Subtask #9
0.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 20056 KB Output is correct
2 Correct 4 ms 20060 KB Output is correct
3 Correct 4 ms 20060 KB Output is correct
4 Incorrect 4 ms 20316 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #10
0.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 20056 KB Output is correct
2 Correct 3 ms 20060 KB Output is correct
3 Correct 3 ms 20060 KB Output is correct
4 Correct 4 ms 20060 KB Output is correct
5 Correct 3 ms 20060 KB Output is correct
6 Correct 3 ms 20060 KB Output is correct
7 Correct 3 ms 20060 KB Output is correct
8 Incorrect 4 ms 20060 KB Output isn't correct
9 Halted 0 ms 0 KB -