제출 #1026310

#제출 시각아이디문제언어결과실행 시간메모리
1026310TurkhuuSeptember (APIO24_september)C++17
45 / 100
86 ms9800 KiB
#include "september.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int solve(int N, int M, vector<int> P, vector<vector<int>> S) {
	vector<int> pos(N), mx(N);
	for (int i = 0; i < N - 1; i++) {
		pos[S[0][i]] = mx[S[0][i]] = i;
	}
	for (int i = N - 1; i; i--) {
		mx[P[i]] = max(mx[P[i]], pos[i]);
	}
	int ans = 0;
	for (int i = 0, j = -1; i < N - 1; i++) {
		if ((j = max(j, mx[S[0][i]])) == i) ans++, j = -1;
	}
	return ans;
}
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