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Submission #162574

# Submission time Handle Problem Language Result Execution time Memory
162574 2019-11-08T19:46:46 Z MohamedAhmed04 Roller Coaster Railroad (IOI16_railroad) C++14
0 / 100
 2000 ms 19816 KB 
#include <bits/stdc++.h>
#include "railroad.h"
//#include "grader.cpp" 

using namespace std ;

vector<int>a , b ;
int n ;

vector< pair<int , int> >vp ;

bool solve(pair<int , int>p)
{
	set< pair<int , int> >s ;
	set< pair<int , int> >::iterator it ;
	for(int i = 0 ; i < n ; ++i)
		s.insert(vp[i]) ;
	for(int i = 0 ; i < n-1 ; ++i)
	{
		s.erase(p) ;
		it = s.lower_bound({p.second , -1}) ;
		if(it == s.end())
			return 0 ;
		p = *it ;
	}
	return 1 ;
}

long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
    n = (int) s.size();
    a = s , b = t ;
    for(int i = 0 ; i < n ; ++i)
    	vp.push_back({a[i] , b[i]}) ;
    sort(vp.begin() , vp.end()) ;
    for(int i = 0 ; i < 100 ; ++i)
    {
    	if(solve(vp[i]) == 1)
    		return 0 ;
    }
    return 1 ;
}

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 252 KB n = 2
2 Correct 2 ms 256 KB n = 2
3 Correct 2 ms 376 KB n = 2
4 Correct 2 ms 376 KB n = 2
5 Correct 2 ms 376 KB n = 2
6 Incorrect 3 ms 376 KB answer is not correct: 0 instead of 523688153
7 Halted 0 ms 0 KB -

Subtask #2
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 252 KB n = 2
2 Correct 2 ms 256 KB n = 2
3 Correct 2 ms 376 KB n = 2
4 Correct 2 ms 376 KB n = 2
5 Correct 2 ms 376 KB n = 2
6 Incorrect 3 ms 376 KB answer is not correct: 0 instead of 523688153
7 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 199 ms 19336 KB n = 199999
2 Execution timed out 2059 ms 19816 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 252 KB n = 2
2 Correct 2 ms 256 KB n = 2
3 Correct 2 ms 376 KB n = 2
4 Correct 2 ms 376 KB n = 2
5 Correct 2 ms 376 KB n = 2
6 Incorrect 3 ms 376 KB answer is not correct: 0 instead of 523688153
7 Halted 0 ms 0 KB -