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Submission #784068

# Submission time Handle Problem Language Result Execution time Memory
784068 2023-07-15T15:43:48 Z zsombor Unscrambling a Messy Bug (IOI16_messy) C++17
100 / 100
 2 ms 468 KB 
#include <iostream>
#include <vector>
#include "messy.h"
using namespace std;

string s = "";

char opp(int i) {
    return (s[i] == '0' ? '1' : '0');
}

vector <int> restore_permutation(int n, int w, int r) {
    int l; for (int j = 0; j <= 7; j++) if (n & (1 << j)) l = j;
    for (int i = 0; i < n; i++) s.push_back('0');
    for (int i = 1; i < n; i += 2) { s[i] = '1'; add_element(s); s[i] = '0'; }
    for (int j = 1; j < l; j++) {
        for (int i = 0; i < n; i++) s[i] = (i & (1 << (j - 1))) ? '1' : '0';
        for (int i = 0; i < n; i++) {
            if ((i & (1 << j)) == 0) continue;
            s[i] = opp(i);
            add_element(s);
            s[i] = opp(i);
        }
    }
    compile_set();
    fill(s.begin(), s.end(), '0');
    vector <vector <bool>> b(n, vector <bool>(l, false));
    for (int i = 0; i < n; i++) { s[i] = '1'; b[i][0] = check_element(s); s[i] = '0'; }
    for (int j = 1; j < l; j++) {
        for (int i = 0; i < n; i++) s[i] = b[i][j - 1] ? '1' : '0';
        for (int i = 0; i < n; i++) {
            s[i] = opp(i);
            b[i][j] = check_element(s);
            s[i] = opp(i);
        }
    }
    vector <int> ans(n, 0);
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < l; j++) {
            if (b[i][j]) ans[i] += (1 << j);
        }
    }
    return ans;
}

Compilation message

messy.cpp: In function 'std::vector<int> restore_permutation(int, int, int)':
messy.cpp:13:9: warning: 'l' may be used uninitialized in this function [-Wmaybe-uninitialized]
   13 |     int l; for (int j = 0; j <= 7; j++) if (n & (1 << j)) l = j;
      |         ^

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB n = 8
2 Correct 0 ms 212 KB n = 8
3 Correct 0 ms 212 KB n = 8
4 Correct 0 ms 212 KB n = 8
5 Correct 1 ms 212 KB n = 8
6 Correct 0 ms 212 KB n = 8
7 Correct 0 ms 212 KB n = 8
8 Correct 0 ms 212 KB n = 8
9 Correct 0 ms 212 KB n = 8
10 Correct 0 ms 212 KB n = 8
11 Correct 0 ms 212 KB n = 8
12 Correct 0 ms 212 KB n = 8
13 Correct 0 ms 212 KB n = 8
14 Correct 0 ms 212 KB n = 8
15 Correct 0 ms 212 KB n = 8

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB n = 32
2 Correct 1 ms 212 KB n = 32
3 Correct 1 ms 304 KB n = 32
4 Correct 0 ms 212 KB n = 32
5 Correct 0 ms 212 KB n = 32
6 Correct 0 ms 212 KB n = 32
7 Correct 1 ms 304 KB n = 32
8 Correct 1 ms 212 KB n = 32
9 Correct 1 ms 304 KB n = 32
10 Correct 1 ms 212 KB n = 32
11 Correct 1 ms 212 KB n = 32
12 Correct 1 ms 212 KB n = 32
13 Correct 0 ms 296 KB n = 32
14 Correct 1 ms 212 KB n = 32
15 Correct 0 ms 212 KB n = 32

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB n = 32
2 Correct 1 ms 296 KB n = 32
3 Correct 1 ms 212 KB n = 32
4 Correct 1 ms 212 KB n = 32
5 Correct 1 ms 212 KB n = 32
6 Correct 1 ms 304 KB n = 32
7 Correct 1 ms 212 KB n = 32
8 Correct 1 ms 212 KB n = 32
9 Correct 1 ms 212 KB n = 32
10 Correct 0 ms 212 KB n = 32
11 Correct 1 ms 212 KB n = 32
12 Correct 1 ms 212 KB n = 32
13 Correct 1 ms 212 KB n = 32
14 Correct 1 ms 212 KB n = 32
15 Correct 1 ms 304 KB n = 32

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB n = 128
2 Correct 1 ms 468 KB n = 128
3 Correct 1 ms 428 KB n = 128
4 Correct 1 ms 468 KB n = 128
5 Correct 1 ms 468 KB n = 128
6 Correct 1 ms 468 KB n = 128
7 Correct 1 ms 428 KB n = 128
8 Correct 1 ms 468 KB n = 128
9 Correct 1 ms 468 KB n = 128
10 Correct 1 ms 468 KB n = 128
11 Correct 1 ms 468 KB n = 128
12 Correct 1 ms 468 KB n = 128
13 Correct 1 ms 468 KB n = 128
14 Correct 1 ms 468 KB n = 128
15 Correct 1 ms 468 KB n = 128

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB n = 128
2 Correct 1 ms 468 KB n = 128
3 Correct 2 ms 468 KB n = 128
4 Correct 2 ms 468 KB n = 128
5 Correct 2 ms 468 KB n = 128
6 Correct 1 ms 468 KB n = 128
7 Correct 1 ms 468 KB n = 128
8 Correct 1 ms 432 KB n = 128
9 Correct 1 ms 428 KB n = 128
10 Correct 1 ms 468 KB n = 128
11 Correct 1 ms 468 KB n = 128
12 Correct 1 ms 468 KB n = 128
13 Correct 1 ms 468 KB n = 128
14 Correct 1 ms 468 KB n = 128
15 Correct 1 ms 468 KB n = 128