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Submission #405745

# Submission time Handle Problem Language Result Execution time Memory
405745 2021-05-16T21:09:37 Z peuch Toy Train (IOI17_train) C++17
0 / 100
 10 ms 1352 KB 
#include "train.h"
#include<bits/stdc++.h>
using namespace std;

const int MAXN = 5e3 + 10;

int n;

vector<int> ar[MAXN];

vector<int> sub1(std::vector<int> a, std::vector<int> r, std::vector<int> u, std::vector<int> v){
	vector<int> w(n, 0);
	for(int i = n - 1; i >= 0; i--){
		if(ar[i].size() == 2){
			if(a[i]){
				if(r[i]) w[i] = w[i + 1];
				else w[i] = 1;
			}
			else{
				if(r[i]) w[i] = 0;
				else w[i] = w[i + 1];
			}
		}
		else if(ar[i][0] == i) w[i] = !r[i];
		else w[i] = w[i + 1];
	}
	return w;
}


vector<int> sub2(std::vector<int> a, std::vector<int> r, std::vector<int> u, std::vector<int> v);
vector<int> sub3(std::vector<int> a, std::vector<int> r, std::vector<int> u, std::vector<int> v);
vector<int> sub4(std::vector<int> a, std::vector<int> r, std::vector<int> u, std::vector<int> v);
vector<int> sub5(std::vector<int> a, std::vector<int> r, std::vector<int> u, std::vector<int> v);

std::vector<int> who_wins(std::vector<int> a, std::vector<int> r, std::vector<int> u, std::vector<int> v) {
	n = a.size();
	
	
	for(int i = 0; i < u.size(); i++)
		ar[u[i]].push_back(v[i]);
		
	return sub1(a, r, u, v);
	
	if(n <= 15) return sub2(a, r, u, v); 
	
	bool flag = true;
	for(int i = 0; i < n; i++)
		flag &= a[i];
		
	if(flag) return sub3(a, r, u, v);
	
	flag = true;
	for(int i = 0; i < n; i++)
		flag &= !a[i];
		
	if(flag) return sub4(a, r, u, v);
	
	int cnt = 0;
	
	for(int i = 0; i < n; i++)
		cnt += r[i];
	
	if(cnt == 1) return sub5(a, r, u, v);
	
	return sub1(a, r, u, v);
}

Compilation message

train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:40:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |  for(int i = 0; i < u.size(); i++)
      |                 ~~^~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 844 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 332 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 10 ms 1320 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 9 ms 1192 KB 3rd lines differ - on the 1st token, expected: '1', found: '0'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 8 ms 1352 KB 3rd lines differ - on the 2nd token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 51.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 844 KB 3rd lines differ - on the 1st token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -