oj.uz

Submission #143125

# Submission time Handle Problem Language Result Execution time Memory
143125 2019-08-13T06:32:21 Z legend Arranging Shoes (IOI19_shoes) C++17
10 / 100
 2 ms 376 KB 
#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;

long long count_swaps(std::vector<int> s) {
	set<pair<int,int> > ms;
    map<int,int> pos;
	for(int i = 0;i<s.size();i++){
            if(s[i]<0) ms.insert({i,s[i]});
            pos[s[i]] = i;
	}
    int ps = 0;
    long long ans = 0;
    while(ps<s.size()){
        pair<int,int> x = *(ms.begin());
        ms.erase(ms.begin());
        ans+=(x.first-ps);
        for(int i = ps;i<x.first;i++){
            int u = s[i];
            pos[u]++;
        }
        for(int i = x.first;i>ps;i--){
            swap(s[i],s[i-1]);
        }
        for(int i = ps+1;;i++){
            if(s[i] == -x.second){
                ans+=(i-ps-1);
                for(int j = i;j>ps+1;j--) swap(s[j],s[j-1]);
                break;
            }

        }
      //  cout<<ans<<endl;
        ps+=2;
    }
    return ans;
	return 1;
}

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:8:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0;i<s.size();i++){
                ~^~~~~~~~~
shoes.cpp:14:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(ps<s.size()){
           ~~^~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Incorrect 2 ms 376 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Incorrect 2 ms 376 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Incorrect 2 ms 376 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Incorrect 2 ms 376 KB Output isn't correct
4 Halted 0 ms 0 KB -