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Submission #89282

# Submission time Handle Problem Language Result Execution time Memory
89282 2018-12-11T09:30:48 Z turbat Beautiful row (IZhO12_beauty) C++14
100 / 100
 1792 ms 205924 KB 
#include <bits/stdc++.h>
using namespace std; 
     
long long n, m, a[25], dp[1<<21][25], ans, cnt[25], cnt1[25];
     
int main (){	
 	cin >> n;
   	for (int i = 0;i < n;i++) {
   		cin >> a[i];
   		cnt[i] = __builtin_popcount(a[i]);
   		m = a[i];
   		while (m){
   			if (m % 3 == 1) cnt1[i]++;
   			m /= 3;
   		}
   	}
   	for (int i = 0;i < n;i++) dp[1 << i][i] = 1;
   	for (int i = 0;i < (1 << n);i++)
   		for (int j = 0;j < n;j++)
   			for (int o = 0;o < n;o++)
   				if (!(i & 1<<o) && (cnt[j] == cnt[o] || cnt1[j] == cnt1[o]))
   					dp[i|(1<<o)][o] += dp[i][j];
   	for (int i = 0;i < n;i++) ans += dp[(1<<n) - 1][i];
   	cout << ans;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 448 KB Output is correct
4 Correct 2 ms 524 KB Output is correct
5 Correct 2 ms 668 KB Output is correct
6 Correct 13 ms 808 KB Output is correct
7 Correct 3 ms 808 KB Output is correct
8 Correct 2 ms 808 KB Output is correct
9 Correct 3 ms 808 KB Output is correct
10 Correct 3 ms 808 KB Output is correct
11 Correct 16 ms 3812 KB Output is correct
12 Correct 15 ms 3812 KB Output is correct
13 Correct 66 ms 13312 KB Output is correct
14 Correct 351 ms 51900 KB Output is correct
15 Correct 265 ms 51936 KB Output is correct
16 Correct 365 ms 51936 KB Output is correct
17 Correct 375 ms 51936 KB Output is correct
18 Correct 380 ms 51976 KB Output is correct
19 Correct 1792 ms 205924 KB Output is correct
20 Correct 1129 ms 205924 KB Output is correct