oj.uz

Submission #1006282

# Submission time Handle Problem Language Result Execution time Memory
1006282 2024-06-23T16:04:55 Z Almonther Data Transfer (IOI19_transfer) C++17
40 / 100
 78 ms 2516 KB 
#include <bits/stdc++.h>
#include "transfer.h"
#define ll long long
#define co cout<<
//#pragma GCC optimize("O3,Ofast,unroll-loops")
//#pragma GCC target("avx2,sse3,sse4,avx")
using namespace std;
//stuff

vector<int>get_attachment(vector<int>source){
	vector<int>arr;
	ll n=source.size();
    ll num=0;
    ll pa=0;
    for(int i=0;i<n;i++){
        if(source[i]) num^=i+1;
        pa^=source[i];
    }
    string s="";
    while(num){
        s+='0'+(num%2);
        num>>=1;
    }
    reverse(s.begin(),s.end());
    while(s.size()<((n==255)?8:6)) s='0'+s;
    for(auto i:s) arr.push_back(i-'0');
    arr.push_back(pa);
    return arr;
}

vector<int>retrieve(vector<int>data){
    vector<int>arr=data;
    ll n=arr.size();
    ll pa,pa1,num;
    pa=0,pa1=0,num=0;
    ll test=arr[n-1];
    ll n1=((n>=255)?255:63);
    vector<int>ans;
    for(int i=n1;i<n1+((n1==255)?8:6);i++){
        num=num*2+arr[i];
    }
    for(int i=0;i<n1;i++){
        pa^=arr[i];
        if(arr[i]) num^=i+1;
    }
    pa1=pa;
    if(num){
        if(arr[num-1]) pa1=((pa1-1)%2+2)%2;
        else pa1=(pa1+1)%2;
        if(pa1==test){
            for(int i=0;i<n1;i++){
                ans.push_back(arr[i]);
            }
            ans[num-1]^=1;
            return ans;
        }
        else{
            for(int i=0;i<n1;i++){
                ans.push_back(arr[i]);
            }
            return ans;
        }
    }
    else{
        for(int i=0;i<255;i++){
            ans.push_back(arr[i]);
        }
        return ans;
    }
}

Subtask #1
0 / 60.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 792 KB WA in grader: wrong source retrieval
2 Halted 0 ms 0 KB -

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 50 ms 2504 KB Output is correct
2 Correct 46 ms 2512 KB Output is correct
3 Correct 47 ms 2504 KB Output is correct
4 Correct 67 ms 2512 KB Output is correct
5 Correct 47 ms 2508 KB Output is correct
6 Correct 48 ms 2504 KB Output is correct
7 Correct 63 ms 2512 KB Output is correct
8 Correct 51 ms 2504 KB Output is correct
9 Correct 50 ms 2504 KB Output is correct
10 Correct 53 ms 2504 KB Output is correct
11 Correct 47 ms 2512 KB Output is correct
12 Correct 49 ms 2516 KB Output is correct
13 Correct 54 ms 2504 KB Output is correct
14 Correct 48 ms 2504 KB Output is correct
15 Correct 53 ms 2508 KB Output is correct
16 Correct 52 ms 2512 KB Output is correct
17 Correct 51 ms 2504 KB Output is correct
18 Correct 50 ms 2504 KB Output is correct
19 Correct 78 ms 2500 KB Output is correct