oj.uz

Submission #775097

# Submission time Handle Problem Language Result Execution time Memory
775097 2023-07-06T07:36:22 Z Polar_Bear_2007 Xor Sort (eJOI20_xorsort) C++17
25 / 100
 94 ms 18552 KB 
// #pragma GCC optimize("Ofast,unroll-loops")

#ifdef MINHDEPTRAI
 
#include "/Library/Developer/CommandLineTools/usr/include/c++/v1/bits/stdc++.h"
#include <chrono>
#define __gcd(a, b) gcd(a, b)
using namespace std ::chrono;
#else
#include <bits/stdc++.h>
#endif
using namespace std;
#define foru(i, a, b) for (int i = a; i <= b; ++i)
#define ford(i, a, b) for (int i = a; i >= b; --i)
#define IOS ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define mp(a, b) make_pair(a, b)
// #define int long long
typedef pair<int, int>  pii;
typedef pair<pair<int, int>, int> piii;
#define endl '\n'
const string name_minh = "9";
#define int long long
const int maxN = 2e5 + 5;
const int mod = 1;

const int inf = 1e9;
int n, arr[maxN], k;
map<int, int> counting;
void solve(){
    cin >> n >> k;
    foru(i, 1, n){
        cin >> arr[i];
        counting[arr[i]]++;
    }

    vector<pair<int, int>> ans;
    map<int, int>:: iterator it;
    foru(j, 1, n - 1){

        if(arr[j] > arr[j + 1] && (arr[j] ^ arr[j + 1]) < arr[j + 1]){
            it = counting.find(arr[j] ^ arr[j + 1]); 
            if(it -> second != 0) continue;

            counting[arr[j]]--;
            arr[j] = arr[j] ^ arr[j + 1];
            counting[arr[j]]++;

            ans.push_back(mp(j, j + 1));
        }
    }

    foru(i, 1, n){
        foru(j, 1, n - i){
            if(arr[j] > arr[j + 1]){
                swap(arr[j], arr[j + 1]);
                ans.push_back(mp(j + 1, j));
                ans.push_back(mp(j, j + 1));
                ans.push_back(mp(j + 1, j));
            }
        }
    }
 
    cout << ans.size() << endl;
    for(pair<int, int> x: ans){
        cout << x.first << " " << x.second << endl;
    }
    
}
signed main(){
    IOS
    // #ifdef MINHDEPTRAI 
    // ifstream cin(name_minh + ".in");
    // ofstream cout(name_minh + ".out");
    // #endif
    solve();
   
}

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 2 ms 728 KB Output is correct
5 Correct 2 ms 984 KB Output is correct
6 Correct 2 ms 940 KB Output is correct
7 Correct 2 ms 984 KB Output is correct
8 Correct 2 ms 984 KB Output is correct
9 Correct 3 ms 984 KB Output is correct
10 Correct 3 ms 984 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 4 ms 1492 KB Output is correct
13 Correct 4 ms 1492 KB Output is correct
14 Correct 5 ms 1492 KB Output is correct
15 Correct 4 ms 1492 KB Output is correct

Subtask #2
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 2 ms 728 KB Output is correct
5 Correct 2 ms 984 KB Output is correct
6 Correct 2 ms 940 KB Output is correct
7 Correct 2 ms 984 KB Output is correct
8 Correct 2 ms 984 KB Output is correct
9 Correct 3 ms 984 KB Output is correct
10 Correct 3 ms 984 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 4 ms 1492 KB Output is correct
13 Correct 4 ms 1492 KB Output is correct
14 Correct 5 ms 1492 KB Output is correct
15 Correct 4 ms 1492 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 3 ms 984 KB Output is correct
18 Correct 4 ms 1076 KB Output is correct
19 Correct 4 ms 1108 KB Output is correct
20 Correct 4 ms 1108 KB Output is correct
21 Correct 4 ms 1108 KB Output is correct
22 Correct 4 ms 1108 KB Output is correct
23 Correct 4 ms 1108 KB Output is correct
24 Correct 5 ms 1108 KB Output is correct
25 Correct 4 ms 1108 KB Output is correct
26 Incorrect 7 ms 1792 KB Integer 59568 violates the range [0, 40000]
27 Halted 0 ms 0 KB -

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 4 ms 1108 KB Output is correct
5 Incorrect 94 ms 18552 KB Integer 764742 violates the range [0, 40000]
6 Halted 0 ms 0 KB -