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답안 #1077660

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1077660 2024-08-27T08:31:18 Z coolboy19521 아름다운 순열 (IZhO12_beauty) C++17
0 / 100
 2624 ms 262144 KB 
#include "bits/stdc++.h"
#define ll long long
#define int ll

using namespace std;

const int sz = 22;

int vi[1ll << sz][sz];
ll dp[1ll << sz][sz];
int tw[sz], tr[sz];
int a[sz], n;

bool matc(int i, int j) {
    if (tw[i] == tw[j] || tr[i] == tr[j])
        return true;
    return false;
}

ll go(int i, int bt) {
    if (bt == (1ll << n) - 1) return 1ll;
    int& v = vi[bt][i];
    ll& r = dp[bt][i];
    if (v) return r;
    v = 1;
    for (int j = 0; j < n; j ++) {
        int f = bt & (1ll << j);
        if (!f && matc(i, j))
            r += go(j, bt | (1 << j));
    }
    return r;
}

void zero() {
    for (int i = 0; i < (1ll << n); i ++)
        for (int j = 0; j < n; j ++)
            dp[i][j] = vi[i][j] = 0;
}

signed main() {
    cin >> n;

    for (int i = 0; i < n; i ++)
        cin >> a[i];

    for (int i = 0; i < n; i ++) {
        for (int cn = a[i]; 0 < cn; cn /= 2)
            tw[i] += cn % 2;
        for (int cn = a[i]; 0 < cn; cn /= 3)
            tr[i] += 1 == cn % 3;
    }

    ll cn = 0;

    for (int i = 0; i < n; i ++) {
        zero();
        cn += go(i, 1ll << i);
    }

    cout << cn << '\n';
}

Subtask #1
0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2652 KB Output is correct
7 Correct 1 ms 2652 KB Output is correct
8 Correct 2 ms 2652 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 36 ms 10864 KB Output is correct
12 Correct 23 ms 10844 KB Output is correct
13 Correct 222 ms 24668 KB Output is correct
14 Correct 2001 ms 92496 KB Output is correct
15 Correct 2624 ms 92580 KB Output is correct
16 Correct 1412 ms 92580 KB Output is correct
17 Correct 2262 ms 92580 KB Output is correct
18 Correct 1135 ms 92508 KB Output is correct
19 Runtime error 100 ms 262144 KB Execution killed with signal 9
20 Halted 0 ms 0 KB -