Submission #1010363

#	Time	Username	Problem	Language	Result	Execution time	Memory
1010363		pcc	September (APIO24_september)	C++17	100 / 100	110 ms	15428 KiB

september

#include "september.h"

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

const int mxn = 1e5+10;

int N,M;
vector<int> tree[mxn];
bitset<mxn> vis;
int cnt;

void init(){
	for(int i = 0;i<N;i++){
		vis[i] = false;
		tree[i].clear();
	}
	cnt = 0;
}

void dfs(int now){
	if(vis[now])return;
	cnt += (vis[now] = 1);
	for(auto nxt:tree[now]){
		if(!vis[nxt])dfs(nxt);
	}
	return;
}

int solve(int NN, int MM, std::vector<int> F, std::vector<std::vector<int>> S) {
	init();
	N = NN;
	M = MM;
	for(int i = 1;i<N;i++)tree[F[i]].push_back(i);
	int ans = 0;
	for(int i = 0;i<S[0].size();i++){
		for(int j = 0;j<M;j++)dfs(S[j][i]);
		if(cnt == i+1)ans++;
	}
	return ans;
}

Compilation message (stderr)

september.cpp: In function 'int solve(int, int, std::vector<int>, std::vector<std::vector<int> >)':
september.cpp:37:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |  for(int i = 0;i<S[0].size();i++){
      |                ~^~~~~~~~~~~~

• 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