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Submission #1061162

# Submission time Handle Problem Language Result Execution time Memory
1061162 2024-08-16T06:50:52 Z boyliguanhan Data Transfer (IOI19_transfer) C++17
100 / 100
 43 ms 2524 KB 
#include "transfer.h"
using namespace std;
vector<int> get_attachment(vector<int> source) {
    vector<int>stuf;
    int n=source.size(),xorr=0,K=0;
    for(int i=0;i<n;i++)
        xorr^=source[i]*(i+1),K+=source[i];
    vector<int>res;
    res.push_back(K&1);
    if(n<64)for(int i=6;i--;)
        res.push_back(xorr>>i&1);
    else for(int i=8;i--;)
        res.push_back(xorr>>i&1);
    return res;
}

std::vector<int> retrieve(std::vector<int> data) {
    int n=data.size()-7;
    if(data.size()>70)n-=2;
    vector<int>firstcup;
    int xorr=0,K=0;
    for(int i=0;i<n;i++)
        xorr^=data[i]*(i+1),K+=data[i],
        firstcup.push_back(data[i]);
    K&=1;
    int failodd=data[n]!=K;
    int xorgiv=0;
    for(int i=n+1;i<data.size();i++)
        xorgiv=xorgiv<<1|data[i];
    if(failodd&&xorgiv^xorr)
        firstcup[(xorgiv^xorr)-1]^=1;
    return firstcup;
}

Compilation message

transfer.cpp: In function 'std::vector<int> retrieve(std::vector<int>)':
transfer.cpp:28:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |     for(int i=n+1;i<data.size();i++)
      |                   ~^~~~~~~~~~~~

Subtask #1
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 800 KB Output is correct
2 Correct 1 ms 792 KB Output is correct
3 Correct 2 ms 892 KB Output is correct
4 Correct 2 ms 792 KB Output is correct
5 Correct 1 ms 800 KB Output is correct
6 Correct 1 ms 884 KB Output is correct
7 Correct 1 ms 792 KB Output is correct
8 Correct 1 ms 796 KB Output is correct
9 Correct 1 ms 800 KB Output is correct
10 Correct 1 ms 792 KB Output is correct
11 Correct 1 ms 784 KB Output is correct
12 Correct 2 ms 800 KB Output is correct
13 Correct 1 ms 792 KB Output is correct
14 Correct 2 ms 800 KB Output is correct
15 Correct 2 ms 792 KB Output is correct
16 Correct 1 ms 800 KB Output is correct
17 Correct 1 ms 784 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 2512 KB Output is correct
2 Correct 43 ms 2520 KB Output is correct
3 Correct 43 ms 2516 KB Output is correct
4 Correct 41 ms 2516 KB Output is correct
5 Correct 43 ms 2516 KB Output is correct
6 Correct 41 ms 2524 KB Output is correct
7 Correct 41 ms 2508 KB Output is correct
8 Correct 41 ms 2516 KB Output is correct
9 Correct 41 ms 2512 KB Output is correct
10 Correct 41 ms 2520 KB Output is correct
11 Correct 41 ms 2512 KB Output is correct
12 Correct 41 ms 2512 KB Output is correct
13 Correct 41 ms 2508 KB Output is correct
14 Correct 43 ms 2508 KB Output is correct
15 Correct 41 ms 2516 KB Output is correct
16 Correct 41 ms 2516 KB Output is correct
17 Correct 41 ms 2520 KB Output is correct
18 Correct 41 ms 2520 KB Output is correct
19 Correct 40 ms 2520 KB Output is correct