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Submission #547473

# Submission time Handle Problem Language Result Execution time Memory
547473 2022-04-10T20:02:56 Z blue Toy Train (IOI17_train) C++17
12 / 100
 9 ms 1748 KB 
#include "train.h"
#include <vector>
#include <queue>
#include <algorithm>
#include <iostream>
using namespace std;

using vi = vector<int>;
#define sz(x) int(x.size())


 //a = owner, r = charging
vi who_wins(vi a, vi r, vi U, vi V) 
{
	int n = sz(a);
	int m = sz(U);

	vi edge[n];
	vi revedge[n];
	for(int j = 0; j < m; j++)
	{
		edge[U[j]].push_back(V[j]);
		revedge[V[j]].push_back(U[j]);
	}



	vi good(n, 0);
	vi pushed(n, 0);

	queue<int> tbv;

	for(int i = 0; i < n; i++)
	{
		if(r[i])
		{
			good[i] = 1;
			tbv.push(i);
			pushed[i] = 1;
		}
	}

	vi deg(n, 0);
	for(int j = 0; j < m; j++)
		deg[U[j]]++;
	// cerr << "done\n";

	while(!tbv.empty())
	{
		int u = tbv.front();
		tbv.pop();
		// cerr << "u = " << u << '\n';

		for(int v : revedge[u])
		{
			if(pushed[v]) continue;

			if(a[v] == 1)
			{
				pushed[v] = 1;
				tbv.push(v);
				good[v] = 1;
			}
			else
			{
				deg[v]--;
				if(deg[v] == 0)
				{
					pushed[v] = 1;
					tbv.push(v);
					good[v] = 1;
				}
			}
		}
	}

	int cs = 0;
	while(!r[cs])
		cs++;

	bool works;
	if(a[cs] == 1)
	{
		works = 0;
		for(int v : edge[cs])
			if(good[v])
				works = 1;
	}
	else
	{
		works = 1;
		for(int v : edge[cs])
			if(!good[v])
				works = 0;
	}

	if(!works) good = vi(n, 0);

	return good;	
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 1108 KB 3rd lines differ - on the 1st token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 212 KB 3rd lines differ - on the 2nd token, expected: '1', found: '0'
2 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 7 ms 1592 KB 3rd lines differ - on the 1st token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 1364 KB 3rd lines differ - on the 696th token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 1748 KB Output is correct
2 Correct 8 ms 1500 KB Output is correct
3 Correct 9 ms 1616 KB Output is correct
4 Correct 7 ms 1468 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 4 ms 1108 KB Output is correct
7 Correct 5 ms 924 KB Output is correct
8 Correct 7 ms 980 KB Output is correct
9 Correct 5 ms 980 KB Output is correct
10 Correct 2 ms 468 KB Output is correct
11 Correct 4 ms 928 KB Output is correct

Subtask #6
0 / 51.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 1108 KB 3rd lines differ - on the 1st token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -