Submission #991336

#	Time	Username	Problem	Language	Result	Execution time	Memory
991336		SanguineChameleon	September (APIO24_september)	C++17	100 / 100	95 ms	6100 KiB

september

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

int solve(int N, int M, vector<int> F, vector<vector<int>> S) {
	vector<int> cnt_S(N);
	vector<int> cnt_ch(N);
	vector<bool> flag(N);
	for (int i = 1; i < N; i++) {
		cnt_ch[F[i]]++;
	}
	int cnt_bad = 0;
	int res = 0;
	for (int i = 0; i < N - 1; i++) {
		for (int j = 0; j < M; j++) {
			int u = S[j][i];
			cnt_bad -= (cnt_S[u] != 0 && cnt_S[u] != M);
			cnt_S[u]++;
			cnt_bad += (cnt_S[u] != 0 && cnt_S[u] != M);
		}
		int u = S[0][i];
		cnt_bad -= (flag[F[u]] && cnt_ch[F[u]] > 0);
		flag[u] = true;
		cnt_ch[F[u]]--;
		cnt_bad += (flag[F[u]] && cnt_ch[F[u]] > 0);
		cnt_bad += (flag[u] && cnt_ch[u] > 0);
		if (cnt_bad == 0) {
			res++;
		}
	}
	return res;
}

• 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