oj.uz

Submission #745710

# Submission time Handle Problem Language Result Execution time Memory
745710 2023-05-21T03:28:19 Z Pacybwoah Data Transfer (IOI19_transfer) C++14
100 / 100
 62 ms 2496 KB 
#include "transfer.h"
#include<iostream>
#include<vector>
using namespace std;
vector<int> get_attachment(vector<int> source) {
	int n=source.size();
    int k;
    if(n==63){
        k=7; 
        int xorsum=0;
        for(int i=1;i<=n;i++) if(source[i-1]) xorsum^=i;
        vector<int> vec;
        int cnt=0;
        for(int i=32;i>0;i>>=1){
            if(xorsum&i) vec.push_back(1),cnt++;
            else vec.push_back(0);
        }
        if(cnt&1) vec.push_back(1);
        else vec.push_back(0);
        return vec;
    }
    else{
        k=9;
        int xorsum=0;
        for(int i=1;i<=n;i++) if(source[i-1]) xorsum^=i;
        vector<int> vec;
        int cnt=0;
        for(int i=128;i>0;i>>=1){
            if(xorsum&i) vec.push_back(1),cnt++;
            else vec.push_back(0);
        }
        if(cnt&1) vec.push_back(1);
        else vec.push_back(0);
        return vec;
    }
}

vector<int> retrieve(vector<int> data) {
	int n=data.size();
    if(n==70){
        int xorsum=0;
        for(int i=1;i<=63;i++) if(data[i-1]) xorsum^=i;
        int xordata=0,cnt=0;
        for(int i=63;i<69;i++){
            xordata<<=1;
            if(data[i]){
                xordata++;
                cnt++;
            }
        }
        if((cnt&1)!=data[69]||xorsum==xordata){
            vector<int> vec(63);
            for(int i=0;i<63;i++) vec[i]=data[i];
            return vec;
        }
        else{
            xorsum^=xordata;
            data[xorsum-1]=1-data[xorsum-1];
            vector<int> vec(63);
            for(int i=0;i<63;i++) vec[i]=data[i];
            return vec;
        }
    }
    else{
        int xorsum=0;
        for(int i=1;i<=255;i++) if(data[i-1]) xorsum^=i;
        int xordata=0,cnt=0;
        for(int i=255;i<263;i++){
            xordata<<=1;
            if(data[i]){
                xordata++;
                cnt++;
            }
        }
        if((cnt&1)!=data[263]||xorsum==xordata){
            vector<int> vec(255);
            for(int i=0;i<255;i++) vec[i]=data[i];
            return vec;
        }
        else{
            xorsum^=xordata;
            data[xorsum-1]=1-data[xorsum-1];
            vector<int> vec(255);
            for(int i=0;i<255;i++) vec[i]=data[i];
            return vec;
        }
    }
}

Compilation message

transfer.cpp: In function 'std::vector<int> get_attachment(std::vector<int>)':
transfer.cpp:7:9: warning: variable 'k' set but not used [-Wunused-but-set-variable]
    7 |     int k;
      |         ^

Subtask #1
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 640 KB Output is correct
2 Correct 3 ms 652 KB Output is correct
3 Correct 3 ms 652 KB Output is correct
4 Correct 3 ms 644 KB Output is correct
5 Correct 3 ms 644 KB Output is correct
6 Correct 3 ms 648 KB Output is correct
7 Correct 3 ms 644 KB Output is correct
8 Correct 3 ms 728 KB Output is correct
9 Correct 2 ms 644 KB Output is correct
10 Correct 3 ms 644 KB Output is correct
11 Correct 3 ms 736 KB Output is correct
12 Correct 3 ms 644 KB Output is correct
13 Correct 3 ms 652 KB Output is correct
14 Correct 3 ms 644 KB Output is correct
15 Correct 3 ms 648 KB Output is correct
16 Correct 3 ms 644 KB Output is correct
17 Correct 3 ms 652 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 2484 KB Output is correct
2 Correct 47 ms 2488 KB Output is correct
3 Correct 48 ms 2484 KB Output is correct
4 Correct 58 ms 2456 KB Output is correct
5 Correct 62 ms 2488 KB Output is correct
6 Correct 60 ms 2488 KB Output is correct
7 Correct 59 ms 2488 KB Output is correct
8 Correct 52 ms 2496 KB Output is correct
9 Correct 41 ms 2444 KB Output is correct
10 Correct 40 ms 2488 KB Output is correct
11 Correct 40 ms 2404 KB Output is correct
12 Correct 50 ms 2496 KB Output is correct
13 Correct 53 ms 2488 KB Output is correct
14 Correct 46 ms 2488 KB Output is correct
15 Correct 47 ms 2492 KB Output is correct
16 Correct 54 ms 2496 KB Output is correct
17 Correct 53 ms 2492 KB Output is correct
18 Correct 52 ms 2488 KB Output is correct
19 Correct 48 ms 2496 KB Output is correct