Submission #1201433

#	Time	Username	Problem	Language	Result	Execution time	Memory
1201433		YouKnowCipher	September (APIO24_september)	C++20	100 / 100	69 ms	6264 KiB

september

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

int solve (int n, int m, vector<int> f, vector<vector<int>> v) {
	vector<pair<int, int>> p(n, {n, 0});
    for (int i = 0; i < m; i++) {
        for (int j = 0; j < n - 1; j++) {
            p[v[i][j]].first = min(p[v[i][j]].first, j);
            p[v[i][j]].second = max(p[v[i][j]].second, j);
        }
    }
    vector<int> diff(n, 0);
    for (int i = 1; i < n; i++) {
        diff[p[i].first]++;
        diff[p[i].second]--;
        if (p[f[i]].first <= p[i].second) {
            diff[p[f[i]].first]++;
            diff[p[i].second]--;
        }
    }
    int ans = 0;
    for (int i = 0; i < n - 1; i++) {
        if (i) diff[i] += diff[i - 1];
        if (diff[i] == 0) ans++;
    }
    return ans;
}

• 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