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Submission #768227

# Submission time Handle Problem Language Result Execution time Memory
768227 2023-06-27T18:22:01 Z Ahmed57 Beautiful row (IZhO12_beauty) C++17
100 / 100
 2443 ms 164540 KB 
#include<bits/stdc++.h>

using namespace std;
long long n,arr[21],bi[21],ti[21];
long long dp[(1<<20)][20];
long long solve(int mask,int la){
    if(mask==(1<<n)-1)return 1;
    if(dp[mask][la]!=-1)return dp[mask][la];
    long long c1 = 0;
    for(int i = 0;i<n;i++){
        if(mask&(1<<i))continue;
        if(mask==0||bi[i]==bi[la]||ti[i]==ti[la]){
            c1+=solve(mask|(1<<i),i);
        }
    }
    return dp[mask][la] = c1;
}
int main(){
    cin>>n;
    for(int i = 0;i<n;i++){
        cin>>arr[i];
        for(int j = 29;j>=0;j--){
            if(arr[i]&(1<<j)){
                bi[i]++;
            }
        }
        long long tmp = arr[i];
        long long ans = 1;
        for(int j = 1;j<=19;j++)ans*=3;
        for(long long j = 19;j>=0;j--){
            int z = 0;
            while(tmp>=ans){
                tmp-=ans;z++;
            }
            ans/=3;
            if(z==1){
                ti[i]++;
            }
        }
    }
    memset(dp,-1,sizeof dp);
    cout<<solve(0,0)<<endl;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 164400 KB Output is correct
2 Correct 47 ms 164320 KB Output is correct
3 Correct 47 ms 164412 KB Output is correct
4 Correct 50 ms 164416 KB Output is correct
5 Correct 45 ms 164392 KB Output is correct
6 Correct 47 ms 164324 KB Output is correct
7 Correct 48 ms 164328 KB Output is correct
8 Correct 47 ms 164444 KB Output is correct
9 Correct 47 ms 164316 KB Output is correct
10 Correct 47 ms 164428 KB Output is correct
11 Correct 58 ms 164540 KB Output is correct
12 Correct 53 ms 164388 KB Output is correct
13 Correct 93 ms 164372 KB Output is correct
14 Correct 314 ms 164440 KB Output is correct
15 Correct 359 ms 164484 KB Output is correct
16 Correct 279 ms 164440 KB Output is correct
17 Correct 328 ms 164444 KB Output is correct
18 Correct 227 ms 164336 KB Output is correct
19 Correct 1981 ms 164440 KB Output is correct
20 Correct 2443 ms 164436 KB Output is correct