Submission #1065164

#	Time	Username	Problem	Language	Result	Execution time	Memory
1065164		Shadow1	September (APIO24_september)	C++17	100 / 100	294 ms	61848 KiB

september

#include "september.h"

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

#define output_vector(v) for(auto &x : v){cout << x << ' ';}cout << '\n';
#define show(x) cerr << (#x) << " = " << (x) << '\n';
#define sz(x) int(x.size())



int solve(int N, int M, std::vector<int> F, std::vector<std::vector<int>> S) {
	int ans = 0;
	vector<vector<int>> child(N);
	for(int i=1; i<N; ++i) {
		child[F[i]].push_back(i);
	}
	vector<vector<set<int>>> c(M, vector<set<int>>(N));
	vector<set<int>> cur(M), track(M);
	for(int j=0; j<N; ++j) {
		for(auto &k : child[j]) {
			for(int i=0; i<M; ++i) c[i][j].insert(k);
		}
	}
	for(int j=0; j<N-1; ++j) {
		for(int i=0; i<M; ++i) {
			int k = S[i][j];
			cur[i].insert(k);
			track[i].insert(k);
			while(k > 0 && cur[i].count(k) && c[i][k].empty()) {
				cur[i].erase(k);
				c[i][F[k]].erase(k);
				k = F[k];
			}
		}
		bool cnt = 0, same = true;
		for(int i=0; i<M; ++i) {
			cnt += sz(cur[i]);
		}
		for(int i=1; i<M; ++i) {
			if(track[i] != track[0]) same = false;
		}

		if(cnt == 0 && same) {
			++ans;
			for(int i=0; i<M; ++i)
				track[i].clear();
		}
	}
	return ans;
}


// void taskcase() {
// 	int N, M;
// 	assert(2 == scanf("%d%d", &N, &M));
	
// 	std::vector<int> F(N);
// 	F[0] = -1;
// 	for (int i = 1; i < N; ++i)
//   		assert(1 == scanf("%d", &F[i]));
	
// 	std::vector<std::vector<int>> S(M, std::vector<int>(N - 1));
// 	for (int i = 0; i < M; ++i)
// 		for (int j = 0; j < N - 1; ++j)
//   			assert(1 == scanf("%d", &S[i][j]));
  	
// 	printf("%d\n", solve(N, M, F, S));
// }

// int main() {
// 	int T;
// 	assert(1 == scanf("%d", &T));
// 	while(T--) taskcase();
// 	return 0;
// }

• 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