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Submission #370650

# Submission time Handle Problem Language Result Execution time Memory
370650 2021-02-24T11:33:13 Z MilosMilutinovic Beautiful row (IZhO12_beauty) C++14
100 / 100
 848 ms 164676 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long

const int mxN = 20;
int n, a[mxN];
ll dp[1<<mxN][mxN];
bool con[mxN][mxN];

int cnt(int x) {
	int res=0;
	while(x)
		res+=x%2, x/=2;
	return res;
}

int cnt1(int x) {
	int res=0;
	while(x)
		res+=(x%3==1?1:0), x/=3;
	return res;
}

int main() {
	cin >> n;
	for(int i=0; i<n; ++i) {
		cin >> a[i];
		dp[1<<i][i]=1;
	}
	for(int i=0; i<n; ++i)
		for(int j=0; j<n; ++j)
			if(cnt(a[i])==cnt(a[j])||cnt1(a[i])==cnt1(a[j]))
				con[i][j]=true;
	for(int i=1; i<(1<<n); ++i) {
		for(int j=0; j<n; ++j) {
			if(i&(1<<j)) {
				for(int k=0; k<n; ++k) {
					if((i>>k)&1^1&&con[j][k]){
						dp[i|(1<<k)][k]+=dp[i][j];
					}
				}
			}
		}
	}
	ll ans = 0;
	for(int i=0; i<n; ++i)
		ans+=dp[(1<<n)-1][i];
	cout << ans << '\n';
	return 0;
}

Compilation message

beauty.cpp: In function 'int main()':
beauty.cpp:39:15: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   39 |      if((i>>k)&1^1&&con[j][k]){
      |         ~~~~~~^~

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 492 KB Output is correct
7 Correct 1 ms 620 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 9 ms 2924 KB Output is correct
12 Correct 8 ms 2924 KB Output is correct
13 Correct 37 ms 10604 KB Output is correct
14 Correct 180 ms 41452 KB Output is correct
15 Correct 155 ms 41468 KB Output is correct
16 Correct 183 ms 41452 KB Output is correct
17 Correct 189 ms 41324 KB Output is correct
18 Correct 190 ms 41324 KB Output is correct
19 Correct 848 ms 164676 KB Output is correct
20 Correct 700 ms 164500 KB Output is correct