oj.uz

Submission #1059950

# Submission time Handle Problem Language Result Execution time Memory
1059950 2024-08-15T09:34:31 Z thieunguyenhuy Data Transfer (IOI19_transfer) C++17
100 / 100
 122 ms 3012 KB 
#ifndef hwe
    #include "transfer.h"
#endif
 
#include <bits/stdc++.h>
using namespace std;
 
#define popcount(n) (__builtin_popcountll((n)))
#define clz(n) (__builtin_clzll((n)))
#define ctz(n) (__builtin_ctzll((n)))
#define lg(n) (63 - __builtin_clzll((n)))
#define BIT(n, i) (((n) >> (i)) & 1ll)
#define MASK(i) (1ll << (i))
#define FLIP(n, i) ((n) ^ (1ll << (i)))
#define ON(n, i) ((n) | MASK(i))
#define OFF(n, i) ((n) & ~MASK(i))
 
#define Int __int128
#define fi first
#define se second
 
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<long long, long long> pll;
typedef pair<long long, int> pli;
typedef pair<int, long long> pil;
typedef vector<pair<int, int>> vii;
typedef vector<pair<long long, long long>> vll;
typedef vector<pair<long long, int>> vli;
typedef vector<pair<int, long long>> vil;
 
template <class T1, class T2>
bool maximize(T1 &x, T2 y) {
    if (x < y) {
        x = y;
        return true;
    }
    return false;
}
template <class T1, class T2>
bool minimize(T1 &x, T2 y) {
    if (x > y) {
        x = y;
        return true;
    }
    return false;
}
 
template <class T>
void remove_duplicate(vector<T> &ve) {
    sort (ve.begin(), ve.end());
    ve.resize(unique(ve.begin(), ve.end()) - ve.begin());
}
 
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
template <class T> T random(T l, T r) {
    return uniform_int_distribution<T>(l, r)(rng);
}
template <class T> T random(T r) {
    return rng() % r;
}
 
const int N = 1e6 + 5;
const int MOD = 1e9 + 7;
const int inf = 1e9;
const ll INF = 1e18;
 
vector<int> get_attachment(vector<int> source) {
    int Xor = 0;
    for (auto &x : source) Xor ^= x;
    source.emplace_back(Xor);
    int lim = lg(source.size());
    for (int bit = 0; bit < lim; ++bit) {
        int cur_xor = 0;
        for (int i = 0; i < MASK(lim); ++i) if (BIT(i, bit)) cur_xor ^= source[i];
        source.emplace_back(cur_xor);
    }
    return vector<int>(source.begin() + MASK(lim) - 1, source.end());
}
 
vector<int> retrieve(vector<int> data) {
    int Xor = 0, lim = lg(data.size());
    for (int i = 0; i < MASK(lim); ++i) Xor ^= data[i];
    if (Xor != 0) {
        int wrong_spot = 0;
        for (int bit = 0; bit < lim; ++bit) {
            int cur_xor = 0;
            for (int i = 0; i < MASK(lim); ++i) if (BIT(i, bit)) cur_xor ^= data[i];
            if (cur_xor != data[bit + MASK(lim)]) wrong_spot = ON(wrong_spot, bit);
        }
        data[wrong_spot] = !data[wrong_spot];
    }
    return vector<int>(data.begin(), data.begin() + MASK(lim) - 1);
}

#ifdef hwe
// signed main() {
//     vector<int> data = get_attachment({1, 0, 1});
//     vector<int> ans = retrieve(data);
 
//     for (auto &x : ans) cerr << x << ' ';
//     cerr << '\n';
 
//     cerr << '\n'; return 0;
// }
#endif

Subtask #1
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 788 KB Output is correct
2 Correct 2 ms 800 KB Output is correct
3 Correct 2 ms 800 KB Output is correct
4 Correct 2 ms 792 KB Output is correct
5 Correct 2 ms 804 KB Output is correct
6 Correct 2 ms 800 KB Output is correct
7 Correct 2 ms 804 KB Output is correct
8 Correct 2 ms 800 KB Output is correct
9 Correct 2 ms 800 KB Output is correct
10 Correct 2 ms 792 KB Output is correct
11 Correct 2 ms 792 KB Output is correct
12 Correct 2 ms 788 KB Output is correct
13 Correct 2 ms 800 KB Output is correct
14 Correct 2 ms 800 KB Output is correct
15 Correct 2 ms 800 KB Output is correct
16 Correct 3 ms 792 KB Output is correct
17 Correct 2 ms 800 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 103 ms 2504 KB Output is correct
2 Correct 104 ms 2508 KB Output is correct
3 Correct 102 ms 2508 KB Output is correct
4 Correct 103 ms 2512 KB Output is correct
5 Correct 106 ms 2508 KB Output is correct
6 Correct 103 ms 2516 KB Output is correct
7 Correct 103 ms 2516 KB Output is correct
8 Correct 112 ms 2520 KB Output is correct
9 Correct 104 ms 2432 KB Output is correct
10 Correct 102 ms 2516 KB Output is correct
11 Correct 110 ms 3012 KB Output is correct
12 Correct 122 ms 2516 KB Output is correct
13 Correct 104 ms 2760 KB Output is correct
14 Correct 106 ms 2584 KB Output is correct
15 Correct 102 ms 2516 KB Output is correct
16 Correct 103 ms 2516 KB Output is correct
17 Correct 105 ms 2516 KB Output is correct
18 Correct 105 ms 2456 KB Output is correct
19 Correct 106 ms 2516 KB Output is correct