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Submission #283554

# Submission time Handle Problem Language Result Execution time Memory
283554 2020-08-26T01:02:05 Z test2 Arranging Shoes (IOI19_shoes) C++14
10 / 100
 1 ms 384 KB 
#include<bits/stdc++.h>
#include "shoes.h"
#include<ext/rope>
#define I inline void 

using namespace __gnu_cxx ; 

using namespace std ; 

using ll = long long ; 
using ld = long double ; 

const int N = 3000 + 7 , mod = 1e9 + 7 ;

// How interesting!

int n; 


long long count_swaps(std::vector<int> s) {

	int n = (int) s.size() ;
	ll ret = 0 ; 
	rope<int> shoes (n * 2 , 0) ; 
	for(int i = 0 ;i < n;i ++){
		shoes.mutable_reference_at(i) = s[i] ; 
	}
	for(int i = 0 ;i < n; i+=2){	
		int pos = shoes.find(-s[i]) ; 
		shoes.erase(pos , 1) ;
		shoes.erase(0 , 1) ; 
		ret += pos - i - 1;  
		if(s[i] > s[pos]){
			ret++ ;
		}
	}

	return ret;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Incorrect 1 ms 384 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Incorrect 1 ms 256 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Incorrect 1 ms 256 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Incorrect 1 ms 384 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Incorrect 1 ms 384 KB Output isn't correct
4 Halted 0 ms 0 KB -