oj.uz

Submission #1098488

# Submission time Handle Problem Language Result Execution time Memory
1098488 2024-10-09T12:52:05 Z 0pt1mus23 Beautiful row (IZhO12_beauty) C++14
100 / 100
 739 ms 246608 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define ins insert      
#define pb push_back

#define endl '\n'
#define putr(x) cout<<x<<endl;return; 
#define all(x) x.begin(),x.end()
#define _ << " " <<
mt19937 rng(time(0));

const int mod = 998244353,
        sze = (1<<20) +23,
        inf = LLONG_MAX,    
        L = 31;

int dp[sze][30];
int bt(int n){
    int c=0;
    while(n){
        c+= ( (n%3) ==1);
        n/=3;
    }
    return c;
}
void _0x0(){
    int n;
    cin>>n;
    vector<int> olur[n];
    vector<int> arr(n);
    vector<int> bar(n);
    for(int i=0;i<n;i++){
        cin>>arr[i];
        bar[i]=bt(arr[i]);
        olur[i].resize(n,0);
    }

    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            if(bar[i]==bar[j] || __builtin_popcount(arr[i]) == __builtin_popcount(arr[j]) ){
                olur[i][j]=1;
            }
        }
    }
    // dp[0][0]=1;
    for(int i=0;i<n;i++){
        dp[(1<<i)][i] = 1;
    }
    for(int mask=0;mask<(1<<n);mask++){
        for(int last=0;last<n;last++){
            if(mask & (1<<last)){
                for(int ext=0;ext<n;ext++){
                    if(! (mask & (1<<ext)) && olur[last][ext]){
                        // cout<<mask _ " last: " _ last _ "next:" _ ext _ "=>" _ (mask|(1<<ext)) _ dp[mask][last] <<endl;
                        dp[mask | (1<<ext)][ext] += dp[mask][last];
                    }
                }

            }
        }
    }

    int ans=0;
    for(int i=0;i<n;i++){
        ans+=dp[(1<<n) -1][i],dp[(1<<n) -1][i];
    }
    putr(ans);

}
 
signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);

    int tt = 1;
    // cin>>tt;
    while(tt--){
        _0x0();
    }
 
    return 0;
}

Compilation message

beauty.cpp: In function 'void _0x0()':
beauty.cpp:67:46: warning: right operand of comma operator has no effect [-Wunused-value]
   67 |         ans+=dp[(1<<n) -1][i],dp[(1<<n) -1][i];
      |                               ~~~~~~~~~~~~~~~^

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 552 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 0 ms 604 KB Output is correct
11 Correct 7 ms 4184 KB Output is correct
12 Correct 7 ms 4188 KB Output is correct
13 Correct 32 ms 15708 KB Output is correct
14 Correct 168 ms 62004 KB Output is correct
15 Correct 189 ms 61776 KB Output is correct
16 Correct 174 ms 61992 KB Output is correct
17 Correct 170 ms 61780 KB Output is correct
18 Correct 160 ms 61988 KB Output is correct
19 Correct 739 ms 246608 KB Output is correct
20 Correct 656 ms 246608 KB Output is correct