Submission #1092369

#	Time	Username	Problem	Language	Result	Execution time	Memory
1092369		raphaelp	September (APIO24_september)	C++17	100 / 100	124 ms	15352 KiB

september

#include <bits/stdc++.h>
using namespace std;

int solve(int N, int M, vector<int> F, vector<vector<int>> S)
{
    vector<int> inv(N);
    vector<vector<int>> AR(N);
    for (int i = 0; i < N - 1; i++)
    {
        AR[F[i + 1]].push_back(i + 1);
        for (int j = 0; j < M; j++)
        {
            inv[S[j][i]] = max(inv[S[j][i]], i);
        }
    }
    int ans = 0, next = 0;
    for (int i = 0; i < N - 1; i++)
    {
        int x = S[0][i];
        next = max(next, inv[x]);
        for (int j = 0; j < AR[x].size(); j++)
        {
            next = max(next, inv[AR[x][j]]);
        }
        if (next == i)
            ans++;
    }
    return ans;
}

/*int main()
{
    int N, M;
    cin >> N >> M;
    vector<int> p(N);
    vector<vector<int>> S(M, vector<int>(N - 1));
    for (int i = 0; i < N; i++)
        cin >> p[i];
    for (int i = 0; i < M; i++)
    {
        for (int j = 0; j < N - 1; j++)
        {
            cin >> S[i][j];
        }
    }
    cout << solve(N, M, p, S);
}*/

Compilation message (stderr)

september.cpp: In function 'int solve(int, int, std::vector<int>, std::vector<std::vector<int> >)':
september.cpp:21:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |         for (int j = 0; j < AR[x].size(); j++)
      |                         ~~^~~~~~~~~~~~~~

• Subtask 1: 11 / 11
• Subtask 2: 14 / 14
• Subtask 3: 5 / 5
• Subtask 4: 9 / 9
• Subtask 5: 5 / 5
• Subtask 6: 11 / 11
• Subtask 7: 9 / 9
• Subtask 8: 11 / 11
• Subtask 9: 9 / 9
• Subtask 10: 16 / 16