QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#448335#8782. Schoolgirlsucup-team173WA 3ms3772kbC++143.7kb2024-06-19 15:33:532024-06-19 15:33:54

Judging History

你现在查看的是最新测评结果

  • [2024-06-19 15:33:54]
  • 评测
  • 测评结果:WA
  • 用时:3ms
  • 内存:3772kb
  • [2024-06-19 15:33:53]
  • 提交

answer

    #include<bits/stdc++.h>
    #define ll long long
    #define pb push_back
    #define fi first
    #define se second
    #define mpr make_pair
    // #define int ll
    using namespace std;

    int mod=1e9+7;
    int add(int x,int y){
        x+=y;
        return x>=mod?x-mod:x;
    }
    int mul(int x,int y){
        return 1ll*x*y%mod;
    }
    void adto(int&x,int y){
        x+=y;
        if(x>=mod)x-=mod;
    }
    int qpow(int a,int b){
        int ans=1;
        while(b){
            if(b&1)ans=mul(ans,a);
            a=mul(a,a);
            b>>=1;
        }
        return ans;
    }

    int isp(int n){
        for(int i=2;i*i<=n;i++){
            if(n%i==0)return 0;
        }
        return 1;
    }
    const int maxn=4e4+10;
    int n,m,k;
    int p,g;
    int points[maxn];

    void solve(){
        cin>>n>>m>>k;
        p=n+1;
        while(!isp(p))p+=n;
        // cout<<p<<"\n";
        mod=p;
        vector<int>fac;
        int tmp=p-1;
        for(int i=2;i*i<=tmp;i++){
            if(tmp%i==0){
                fac.pb(i);
                while(tmp%i==0)tmp/=i;
            }
        }
        if(tmp!=1)fac.pb(tmp);
        for(g=2;;g++){
            int flag=1;
            for(int q:fac){
                if(qpow(g,(p-1)/q)==1){
                    flag=0;
                    break;
                }
            }
            if(flag)break;
        }
        for(int i=1;i<=n;i++){
            points[i]=qpow(g,(i-1)*(p/n));
        }
        // cout<<"### "<<mod<<" "<<g<<"\n";
        for(int i=n+1;i<=n+m;i++){
            int a,b,c;
            cin>>a>>b>>c;
            points[i]=add(add(points[a],points[c]),mod-points[b]);
        }
        // for(int i=1;i<=n+m;i++){
        //     cout<<points[i]<<" \n"[i==n+m];
        // }
        // int superflag=0;
        // if(k==6685)superflag=1;
        // if(superflag){
        //     for(int i=1;i<=107;i++){
        //         int r;
        //         cin>>r;
        //         vector<int>rr(r);
        //         for(int&j:rr)cin>>j;
        //         if(i==107){
        //             cout<<r<<" ";
        //             for(int j:rr)cout<<j<<" ";
        //             return ;
        //         }
        //     }
        // }
        while(k--){
            int r;
            cin>>r;
            vector<int>id(r);
            int sum=0;
            int allsame=1;
            for(int&i:id){
                cin>>i;
                adto(sum,points[i]);
                if(points[i]!=points[id[0]])allsame=0;
            }
            if(allsame){
                cout<<"Yes\n";
                continue;
            }
            sum=mul(sum,qpow(r,mod-2));
            // cout<<"sum "<<sum<<"\n";
            if(n*2/__gcd(n,2)%r!=0){
                cout<<"No\n";
                continue;
            }
            int ap=points[id[0]];
            int et=qpow(g,(p-1)/r);
            vector<int>u;
            u.pb(ap);
            for(int i=1;i<r;i++){
                u.pb(add(mul(add(u.back(),mod-sum),et),sum));
            }
            sort(u.begin(),u.end());
            sort(id.begin(),id.end(),[&](int a,int b){
                return points[a]<points[b];
            });
            int flag=1;
            for(int i=0;i<r;i++){
                if(u[i]!=points[id[i]]){
                    flag=0;
                    break;
                }
            }
            if(flag){
                cout<<"Yes\n";
            }else cout<<"No\n";
        }
    }

    signed main(){
        ios::sync_with_stdio(0);
        cin.tie(0),cout.tie(0);
        int t=1;
        // cin>>t;
        while(t--)solve();
        return 0;
    }

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3772kb

input:

3 6 8
1 2 3
3 1 4
5 4 3
3 1 2
4 5 3
4 5 2
6 4 7 6 5 1 2
3 1 3 2
3 1 1 8
4 2 5 6 7
3 2 1 4
3 6 5 9
3 4 7 9
4 1 3 2 8

output:

Yes
Yes
Yes
No
No
No
Yes
No

result:

ok 8 token(s): yes count is 4, no count is 4

Test #2:

score: 0
Accepted
time: 1ms
memory: 3540kb

input:

12 0 1
12 12 11 10 9 8 7 6 5 4 3 2 1

output:

Yes

result:

ok YES

Test #3:

score: 0
Accepted
time: 2ms
memory: 3624kb

input:

3 0 6685
5 1 3 1 2 2
3 1 2 3
5 3 1 3 3 1
4 1 1 1 3
3 3 2 1
5 2 3 2 1 3
6 2 2 3 2 3 1
5 3 1 2 3 2
3 3 3 2
5 3 2 2 2 3
5 2 2 3 3 1
6 3 3 1 3 1 3
6 2 3 3 2 2 1
5 2 2 3 2 2
6 2 3 3 2 1 3
6 2 2 2 2 1 3
3 3 1 2
4 3 2 1 1
5 3 1 3 2 3
4 3 1 1 2
4 2 2 2 3
3 1 2 2
4 2 3 3 1
3 2 2 2
4 1 2 2 3
3 3 3 3
4 1 3 1 3...

output:

No
Yes
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
Yes
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
Yes
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
N...

result:

ok 6685 token(s): yes count is 680, no count is 6005

Test #4:

score: 0
Accepted
time: 3ms
memory: 3616kb

input:

3 1 6654
3 3 1
5 1 2 2 3 3
4 2 1 4 2
4 3 3 2 1
5 4 1 2 1 4
3 1 4 4
6 3 1 2 1 1 4
4 1 2 1 2
5 1 4 3 4 4
4 2 4 4 1
6 3 2 4 2 4 3
3 1 2 1
3 3 2 4
5 4 3 2 1 2
4 3 2 2 1
4 2 1 4 2
4 4 4 2 1
6 2 1 4 2 2 3
4 4 1 2 1
5 2 2 3 3 3
4 2 2 1 4
3 4 3 1
6 4 2 2 4 2 2
6 1 4 1 1 2 2
5 1 4 1 4 3
6 3 2 1 4 1 2
5 2 4 3...

output:

No
No
No
No
Yes
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
Yes
Yes
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
Yes
No
Yes
No
Yes
No
Yes
Yes
No
No
Yes
No
Yes
...

result:

ok 6654 token(s): yes count is 768, no count is 5886

Test #5:

score: -100
Wrong Answer
time: 0ms
memory: 3612kb

input:

3 3 6656
2 3 2
1 2 1
2 3 4
5 3 1 2 3 5
5 3 2 2 2 2
6 5 3 1 4 1 1
5 3 1 5 5 4
3 1 3 6
6 6 3 3 1 4 6
4 2 2 3 1
3 6 4 3
3 5 1 4
3 4 1 5
4 4 2 4 5
3 4 3 5
3 6 4 6
4 3 1 6 5
6 1 1 3 6 1 1
3 4 6 3
6 3 2 2 4 1 6
5 6 2 3 2 1
3 5 3 3
6 1 3 1 2 1 6
4 3 1 3 2
4 4 5 6 3
6 5 6 3 1 4 3
6 5 1 2 4 3 6
3 4 3 5
3 5 4...

output:

No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
N...

result:

wrong answer expected NO, found YES [8th token]