oj.uz

Submission #711222

# Submission time Handle Problem Language Result Execution time Memory
711222 2023-03-16T10:22:46 Z Darren0724 Data Transfer (IOI19_transfer) C++17
100 / 100
 260 ms 2512 KB 
#include "transfer.h"
//#include "grader.cpp"
#include <bits/stdc++.h>
using namespace std;
std::vector<int> get_attachment(std::vector<int> source) {
	int n=source.size();
	if(n==63){
        vector<int> a(7),b(7);
        for(int j=0;j<6;j++){
            for(int i=0;i<n;i++){
                if(i&(1<<j)){
                    b[j]^=source[i];
                }
                else{
                    a[j]^=source[i];
                }
            }
        }
        for(int i=0;i<n;i++){
            a[6]^=source[i];
        }
        return a;
	}
	else{
        vector<int> a(9),b(9);
        for(int j=0;j<8;j++){
            for(int i=0;i<n;i++){
                if(i&(1<<j)){
                    b[j]^=source[i];
                }
                else{
                    a[j]^=source[i];
                }
            }
        }
        for(int i=0;i<n;i++){
            a[8]^=source[i];
        }
        return a;
	}
}

std::vector<int> retrieve(std::vector<int> data) {
    vector<int> v=data;
    int n=v.size();
    if(n==70){
        vector<int> a(6),b(6);
        for(int i=63;i<69;i++){
            a[i-63]=v[i];
            b[i-63]=v[69]^a[i-63];
        }
        vector<int> a1(6),b1(6);
        for(int j=0;j<6;j++){
            for(int i=0;i<63;i++){
                if(i&(1<<j)){
                    b1[j]^=v[i];
                }
                else{
                    a1[j]^=v[i];
                }
            }
        }
        int ans=0;
        int cnt=0;
        for(int j=0;j<6;j++){
            if(a[j]!=a1[j]){
                cnt++;
            }
            if(b[j]!=b1[j]){
                cnt++;
                ans^=(1<<j);
            }
        }
        vector<int> ans1(63);
        //cout<<cnt<<' '<<ans<<endl;
        for(int i=0;i<63;i++){
            ans1[i]=v[i];
        }

        if(cnt==6&&ans!=63){
            ans1[ans]^=1;
        }
        return ans1;
    }
    else{
        vector<int> a(8),b(8);
        for(int i=255;i<263;i++){
            a[i-255]=v[i];
            b[i-255]=v[263]^a[i-255];
        }
        vector<int> a1(8),b1(8);
        for(int j=0;j<8;j++){
            for(int i=0;i<255;i++){
                if(i&(1<<j)){
                    b1[j]^=v[i];
                }
                else{
                    a1[j]^=v[i];
                }
            }
        }
        int ans=0;
        int cnt=0;
        for(int j=0;j<8;j++){
            if(a[j]!=a1[j]){
                cnt++;
            }
            if(b[j]!=b1[j]){
                cnt++;
                ans^=(1<<j);
            }
        }
        vector<int> ans1(255);
        //cout<<cnt<<' '<<ans<<endl;
        for(int i=0;i<255;i++){
            ans1[i]=v[i];
        }

        if(cnt==8&&ans!=255){
            ans1[ans]^=1;
        }
        return ans1;
    }



}

Subtask #1
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 640 KB Output is correct
2 Correct 4 ms 640 KB Output is correct
3 Correct 5 ms 644 KB Output is correct
4 Correct 4 ms 640 KB Output is correct
5 Correct 4 ms 640 KB Output is correct
6 Correct 5 ms 640 KB Output is correct
7 Correct 5 ms 640 KB Output is correct
8 Correct 4 ms 648 KB Output is correct
9 Correct 4 ms 640 KB Output is correct
10 Correct 5 ms 732 KB Output is correct
11 Correct 4 ms 724 KB Output is correct
12 Correct 5 ms 652 KB Output is correct
13 Correct 4 ms 640 KB Output is correct
14 Correct 5 ms 648 KB Output is correct
15 Correct 5 ms 648 KB Output is correct
16 Correct 5 ms 640 KB Output is correct
17 Correct 5 ms 640 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 255 ms 2484 KB Output is correct
2 Correct 260 ms 2448 KB Output is correct
3 Correct 251 ms 2492 KB Output is correct
4 Correct 255 ms 2488 KB Output is correct
5 Correct 250 ms 2496 KB Output is correct
6 Correct 255 ms 2496 KB Output is correct
7 Correct 257 ms 2492 KB Output is correct
8 Correct 253 ms 2488 KB Output is correct
9 Correct 252 ms 2444 KB Output is correct
10 Correct 255 ms 2500 KB Output is correct
11 Correct 254 ms 2432 KB Output is correct
12 Correct 255 ms 2488 KB Output is correct
13 Correct 249 ms 2452 KB Output is correct
14 Correct 255 ms 2512 KB Output is correct
15 Correct 251 ms 2488 KB Output is correct
16 Correct 248 ms 2488 KB Output is correct
17 Correct 257 ms 2496 KB Output is correct
18 Correct 258 ms 2496 KB Output is correct
19 Correct 252 ms 2488 KB Output is correct