Submission #998589

#	Time	Username	Problem	Language	Result	Execution time	Memory
998589		dubabuba	September (APIO24_september)	C++17	0 / 100	8 ms	28252 KiB

september

#include "september.h"
#include <bits/stdc++.h>

using namespace std;

typedef pair<int, int> pii;
#define ff first
#define ss second
#define MP make_pair

const pii SP(int a, int b) { return MP(min(a, b), max(a, b)); }
template<typename T> void ono_min(T &MIN, T CMP) { if(MIN > CMP) MIN = CMP; }

const int mxn = 1e6 + 10;
vector<int> adj[mxn];

int n, m, TIME, col[mxn];
int vis[mxn], low[mxn];
stack<int> st;
bool in[mxn];

void dfs(int u) {
	vis[u] = low[u] = TIME++;
	st.push(u);
	in[u] = 1;

	for(int v : adj[u]) {
		if(!vis[v]) {
			dfs(v);
			ono_min(low[u], low[v]);
		} else if(in[v]) {
			ono_min(low[u], low[v]);
		}
	}

	if(low[u] == vis[u]) {
		while(st.top() != u) {
			col[st.top()] = u;
			in[st.top()] = 0;
			st.pop();
		}
		st.pop();
		in[u] = 0;
	}
}

int solve(int N, int M, vector<int> F, vector<vector<int>> S) {
	set<pii> edges;
	for(int i = 1; i < N; i++)
		if(F[i] != 0)
			edges.insert(MP(i, F[i]));
	for(const auto &v : S)
	for(int i = 0; i < v.size() - 1; i++)
		edges.insert(MP(v[i], v[i + 1]));

	for(pii p : edges) {
		int u = p.ff;
		int v = p.ss;
		adj[u].push_back(v);
	}

	for(int i = 0; i < N; i++) {
		cout << i << ": ";
		for(int j : adj[i])
			cout << j << ' ';
		cout << endl;
	}

	for(int i = 0; i < N; i++)
		col[i] = i;
	for(int i = 0; i < N; i++)
		if(vis[i] == 0)
			dfs(i);
	
	int cnt = 0;
	for(int i = 1; i < N; i++)
		if(col[i] == i)
			cnt++;
	return cnt;
}

Compilation message (stderr)

september.cpp: In function 'int solve(int, int, std::vector<int>, std::vector<std::vector<int> >)':
september.cpp:53:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |  for(int i = 0; i < v.size() - 1; i++)
      |                 ~~^~~~~~~~~~~~~~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 14
• Subtask 3: 0 / 5
• Subtask 4: 0 / 9
• Subtask 5: 0 / 5
• Subtask 6: 0 / 11
• Subtask 7: 0 / 9
• Subtask 8: 0 / 11
• Subtask 9: 0 / 9
• Subtask 10: 0 / 16