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Submission #343250

# Submission time Handle Problem Language Result Execution time Memory
343250 2021-01-03T15:10:56 Z apostoldaniel854 Riddick's Cube (IZhO13_riddicks) C++14
100 / 100
 755 ms 492 KB 
#include <bits/stdc++.h>

using namespace std;

#define pb push_back
#define dbg(x) cerr << #x << " " << x << "\n"
using ll = long long;

int n, m;
vector <int> c_moves, l_moves;
int nr_op, ans;
const int MAX_N = 5;
int a[MAX_N][MAX_N];
int b[MAX_N][MAX_N];

bool check () {
    bool okc = true;
    for (int col = 0; col < m; col++) {
        int color = a[0][col];
        for (int row = 1; row < n; row++)
            if (color != a[row][col])
                okc = false;
    }
    bool okr = true;
    for (int row = 0; row < n; row++) {
        int color = a[row][0];
        for (int col = 1; col < m; col++)
            if (color != a[row][col])
                okr = false;
    }
    return (okc || okr);
}

void move_row (int row) {
    for (int col = 0; col < m; col++)
        b[row][(col - 1 + m) % m] = a[row][col];
    for (int col = 0; col < m; col++)
        a[row][col] = b[row][col];
}

void move_col (int col) {
    for (int row = 0; row < n; row++)
        b[(row - 1 + n) % n][col] = a[row][col];
    for (int row = 0; row < n; row++)
        a[row][col] = b[row][col];
}

void go_rows (int nr_row, int nr_op) {
    if (nr_row == n) {
        if (check ())
            ans = min (ans, nr_op);
        return;
    }
    for (int i = 0; i < m; i++) {
        go_rows (nr_row + 1, nr_op + min (i, m - i));
        move_row (nr_row);
    }
}

void go_columns (int nr_col, int nr_op) {
    if (nr_col == m) {
        go_rows (0, nr_op);
        return;
    }
    for (int i = 0; i < n; i++) {
        go_columns (nr_col + 1, nr_op + min (i, n - i));
        move_col (nr_col);
    }
}

int main () {
    ios::sync_with_stdio (false);
    cin.tie (0); cout.tie (0);

    cin >> n >> m;
    for (int i = 0; i < n; i++)
        for (int j = 0; j < m; j++)
            cin >> a[i][j];
    ans = 100500;
    go_columns (0, 0);
    cout << ans;
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 5 ms 364 KB Output is correct
9 Correct 44 ms 364 KB Output is correct
10 Correct 41 ms 364 KB Output is correct
11 Correct 45 ms 364 KB Output is correct
12 Correct 41 ms 364 KB Output is correct
13 Correct 743 ms 364 KB Output is correct
14 Correct 736 ms 392 KB Output is correct
15 Correct 741 ms 492 KB Output is correct
16 Correct 746 ms 392 KB Output is correct
17 Correct 755 ms 492 KB Output is correct
18 Correct 744 ms 364 KB Output is correct
19 Correct 743 ms 492 KB Output is correct
20 Correct 746 ms 392 KB Output is correct