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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#578237#6397. Master of Both IIIshstyleTL 968ms59576kbC++202.4kb2024-09-20 17:34:322024-09-20 17:34:34

Judging History

你现在查看的是最新测评结果

  • [2024-09-20 17:34:34]
  • 评测
  • 测评结果:TL
  • 用时:968ms
  • 内存:59576kb
  • [2024-09-20 17:34:32]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
const int N=(1<<22)+10,mod=998244353;
typedef long long ll;
typedef pair<ll,ll> PII;

ll n,a[N];
int p[N];
int l[N],r[N];
mt19937 rnd(time(0));

ll mi[N];
ll dp[30][30];
ll ddp[N];

vector<PII> e[N];

bool tf[N];


int cal(int x){
    int sum=0;
    for(int i=0;i<n;i++){
        if((x>>i)&1) sum++;
    }
    return sum;
}

int main(){
    int n;
    cin>>n;
    for(int i=0;i<n;i++){
        cin>>a[i];
    }
    a[0]=a[n];
    memset(dp,0x3f,sizeof dp);
    dp[0][0]=0;
    // for(int i=0;i<n;i++) dp[0][i]=a[i];
    for(int i=1;i<n;i++){
        for(int j=0;j<n;j++){
            int nw=(j+i)%n;
            dp[i][nw]=min(dp[i-1][nw],dp[i-1][j]+a[i]);

        }
        // for(int j=0;j<n;j++) cout<<dp[i][j]<<" ";
        // cout<<endl;

    }
    for(int i=0;i<n;i++){
        a[i]=dp[n-1][i];
        // cout<<a[i]<<endl;
    }
    
    memset(ddp,0x3f,sizeof ddp);
    ddp[1]=0;
    for(int i=1;i<(1<<n);i++){
        vector<int> v;
        for(int j=0;j<n;j++){
            if((i>>j)&1) v.push_back(j);
        }
        // int nw=0;
        for(int j=0;j<n;j++){
            int nw=i;
            for(auto k:v){
                int xx=((k-j)%n+n)%n;
                nw|=(1<<xx);
            }
            // nw|=i;
            // cout<<i<<" "<<nw<<" "<<a[j]<<endl;
            ddp[nw]=min(ddp[nw],ddp[i]+a[j]);
        }
    }
    
    // queue<int> q;
    // q.push(1);
    // ddp[1]=0;
    // tf[1]=1;
    // while(q.size()){
    //     int t=q.front();
    //     q.pop();
    //     for(auto [j,w]:e[t]){
    //         ddp[j]=min(ddp[j],ddp[t]+w);
    //         // cout<<j<<" "<<w<<endl;
    //         if(!tf[j]){
    //             tf[j]=1;
    //             q.push(j);
    //         }
    //     }
    // }

    vector<PII> v;
    for(int i=1;i<(1<<n);i++) v.push_back({cal(i),i});
    sort(v.begin(),v.end(),greater<PII>());
    // for(int i=1;i<(1<<n);i++) cout<<ddp[i]<<endl;
    ddp[1]=0;
    for(auto [c,i]:v){
        for(int j=0;j<n;j++){
            if(!((i>>j)&1)){
                int nw=i^(1<<j);
                if(nw!=0){
                    ddp[i]=min(ddp[i],ddp[nw]);
                }
            }
        }
    }
    
    ll ans=0;
    for(int i=1;i<(1<<n);i++){
        // cout<<ddp[i]<<endl;;
        ll res=ddp[i]%mod*i%mod;
        ans=(ans+res)%mod;
    }
    cout<<ans<<endl;

    
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 3ms
memory: 42580kb

input:

3
2 1 2

output:

45

result:

ok 1 number(s): "45"

Test #2:

score: 0
Accepted
time: 0ms
memory: 42612kb

input:

4
1919810 999999998 999999997 114114514

output:

152175989

result:

ok 1 number(s): "152175989"

Test #3:

score: 0
Accepted
time: 3ms
memory: 42628kb

input:

3
842160586 705327547 868243944

output:

78597628

result:

ok 1 number(s): "78597628"

Test #4:

score: 0
Accepted
time: 7ms
memory: 42516kb

input:

5
198327434 147392532 760837755 771109105 676721155

output:

751568230

result:

ok 1 number(s): "751568230"

Test #5:

score: 0
Accepted
time: 7ms
memory: 42672kb

input:

10
831766351 33417723 223739726 80131988 348810263 415437931 119999060 799356097 512022962 23197703

output:

308170104

result:

ok 1 number(s): "308170104"

Test #6:

score: 0
Accepted
time: 8ms
memory: 42960kb

input:

12
892965903 35291219 261557729 131390943 457251874 944586973 724767219 190756777 658923976 587806068 793999675 378390067

output:

964920873

result:

ok 1 number(s): "964920873"

Test #7:

score: 0
Accepted
time: 16ms
memory: 42640kb

input:

14
249132751 477356204 594343028 32906794 270726189 883801423 329535378 877124753 100792287 152414432 142520554 196476850 924736849 383197276

output:

796031217

result:

ok 1 number(s): "796031217"

Test #8:

score: 0
Accepted
time: 968ms
memory: 59576kb

input:

20
627365465 726842612 947302944 649244156 293375951 318148820 237155023 981487641 688151803 844901013 430309799 733877736 520864483 720366437 28746495 143052089 306590290 18586578 662663479 375430013

output:

179404754

result:

ok 1 number(s): "179404754"

Test #9:

score: -100
Time Limit Exceeded

input:

21
805448889 595358753 391340394 525130530 272725205 157594893 261894302 29704333 909085958 127205196 104570238 495437480 458664573 599968678 690908307 220500006 735062204 172834136 241126905 814694254 294923292

output:

260115885

result: