Submission #1173077

#	Time	Username	Problem	Language	Result	Execution time	Memory
1173077		ladnooo	September (APIO24_september)	C++20	100 / 100	112 ms	11712 KiB

september

#include <bits/stdc++.h>
using namespace std;
int solve(int N, int M, std::vector<int> F, std::vector<std::vector<int>> S) {
    int sum = 0;
    vector<int> was(N), used(N), wass(N - 1, 1);
    int sx = 0;
	for(int i = 0; i < N - 1; i++) {
		for(int j = 0; j < M; j++) {
			was[S[j][i]]++;
			if(was[S[j][i]] == 1) sx++;
			if(was[S[j][i]] == M) sx--;
		}
		if(sx > 0) wass[i] = 0;
	}

    vector<int> g[N];
    for(int i = 1; i < N; i++) {
        g[F[i]].push_back(i);
    }

    int cnt = 0;
    for (int i = 0; i < N - 1; i++)
	{
		int curr = S[0][i];
		if(used[curr] == 2) {
            cnt--;
        }
        used[curr] = 1;
		for(int u : g[curr]) {
			if (used[u] != 1) {
				used[u] = 2;
				cnt++;
			}
        }
		if((cnt == 0) && (wass[i] == 1)) sum++;
	}
	return sum;

}

• 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