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Submission #85038

# Submission time Handle Problem Language Result Execution time Memory
85038 2018-11-18T10:01:44 Z stefdasca Beautiful row (IZhO12_beauty) C++14
100 / 100
 1232 ms 181396 KB 
#include<bits/stdc++.h>
using namespace std;
int n, v[22], b3[22], b2[22];
long long dp[(1<<22)][22], sol;
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    cin >> n;
    for(int i = 0; i < n; ++i)
    {
        cin >> v[i];
        int a = v[i];
        b2[i] = __builtin_popcount(v[i]);
        while(a)
        {
            if(a % 3 == 1)
                ++b3[i];
            a /= 3;
        }
    }
    for(int i = 0; i < n; ++i)
        dp[(1<<i)][i] = 1;
    for(int i = 1; i < (1<<n); ++i)
    {
        for(int j = 0; j < n; ++j)
        {
            if(!dp[i][j])
                continue;
            for(int k = 0; k < n; ++k)
            {
                if((i & (1<<k)))
                    continue;
                if(b2[j] == b2[k] || b3[j] == b3[k])
                    dp[i + (1<<k)][k] += dp[i][j];
            }
        }
    }
    for(int i = 0; i < n; ++i)
        sol += dp[(1<<n) - 1][i];
    cout << sol;
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 2 ms 460 KB Output is correct
3 Correct 2 ms 460 KB Output is correct
4 Correct 2 ms 468 KB Output is correct
5 Correct 2 ms 472 KB Output is correct
6 Correct 3 ms 604 KB Output is correct
7 Correct 3 ms 608 KB Output is correct
8 Correct 3 ms 656 KB Output is correct
9 Correct 3 ms 656 KB Output is correct
10 Correct 3 ms 660 KB Output is correct
11 Correct 12 ms 3288 KB Output is correct
12 Correct 10 ms 3332 KB Output is correct
13 Correct 45 ms 11804 KB Output is correct
14 Correct 230 ms 45848 KB Output is correct
15 Correct 215 ms 46020 KB Output is correct
16 Correct 218 ms 46020 KB Output is correct
17 Correct 278 ms 46020 KB Output is correct
18 Correct 219 ms 46020 KB Output is correct
19 Correct 1232 ms 180752 KB Output is correct
20 Correct 950 ms 181396 KB Output is correct