Submission #913823

#	Time	Username	Problem	Language	Result	Execution time	Memory
913823		cot	Beautiful row (IZhO12_beauty)	C++14	0 / 100	3038 ms	600 KiB

beauty

#include <iostream>
#include <algorithm>
#include <map>
#include <array>
#define f first
#define s second
#define pii pair <int, int>
#define pb push_back
using namespace std;
const int N = 50 + 5;
int n, a[N], b[N], p[N], ans, good[N][N];
int ones3(int x) {
    int cnt = 0;
    while (x > 0) {
        if (x % 3 == 1) cnt++;
        x /= 3;
    }
    return cnt;
}
int main() {
    cin >> n;
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
        p[i] = i;
    }
    for (int i = 1; i <= n; i++) {
        for (int j = i + 1; j <= n; j++) {
            if (__builtin_popcountll(a[i]) == __builtin_popcountll(a[j]) || ones3(a[i]) == ones3(a[j])) {
                good[i][j] = good[j][i] = 1;
                continue;
            }
        }
    }
    do {
        for (int i = 1; i <= n; i++) {
            b[i] = a[p[i]];
        }
        int bad = 0;
        for (int i = 1; i < n; i++) {
            if (!good[p[i]][p[i + 1]]) bad = 1;
        }
        if (!bad) ans++;
    } while(next_permutation(p + 1, p + n + 1));
    cout << ans << endl;
}

• Subtask 1: 0 / 100