제출 #739154

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
739154		huynhyen1609	Matching (CEOI11_mat)	C++14	100 / 100	1022 ms	65536 KiB

mat

/*
                                 ..
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        PENGUIN SO CUTE, I LOVE PENGUIN
*/
#include<bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define NAME ""
#define int long long
#define pii pair<int,int>
const int oo=1e9;
const int base=1e4;
const int mod=1e9+7;
const int N=1e6;
const int LG=18;
const int Sqrt=350;
//int hx[]={0,0,1,-1,1,1,-1,-1},hy[]={1,-1,0,0,1,-1,1,-1};
int n,m,a[N+5],p[N+4],tree[4*N+5],cnt[4*N+5];
pii b[N+5];
bool cmp(pii a,pii b)
{
    return a.se<b.se;
}
void up(int id,int l,int r,int k,int val)
{
    if(l==r)
    {
        tree[id]=val;
        if(val)cnt[id]=1;
        else cnt[id]=0;
        return;
    }
    int mid=(l+r)/2;
    if(k<=mid)up(id*2,l,mid,k,val);
    else up(id*2+1,mid+1,r,k,val);
    tree[id]=(tree[id*2]*p[cnt[id*2+1]]%mod+tree[id*2+1])%mod;
    cnt[id]=cnt[id*2]+cnt[id*2+1];
}
main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0),cout.tie(0);
    //freopen(""NAME".inp","r",stdin);
    //freopen(""NAME".out","w",stdout);
    cin>>n>>m;
    int h=0;
    for(int i=1;i<=n;++i)
    {
        int x;cin>>x;
        h=(h*base%mod+x)%mod;
        a[x]=i;
    }
    p[0]=1;
    for(int i=1;i<=m;++i)p[i]=p[i-1]*base%mod;
    //nén dãy b
    for(int i=1;i<=m;++i)cin>>b[i].fi,b[i].se=i;
    sort(b+1,b+m+1);
    for(int i=1;i<=m;++i)b[i].fi=i;
    sort(b+1,b+m+1,cmp);

    int sum=0;
    for(int i=0;i<n;++i)sum=(sum+p[i])%mod;

    queue<int>q;
    for(int i=1;i<=m;++i)
    {
        up(1,1,m,b[i].fi,i);
        if(i>=n)
        {
            int tmp=(tree[1]-sum*(i-n)%mod+mod)%mod;
            if(tmp==h)q.push(i-n+1);
            //cout<<tmp<<' '<<h<<'\n';
            up(1,1,m,b[i-n+1].fi,0);
        }
    }
    cout<<q.size()<<'\n';
    while(!q.empty())
    {
        cout<<q.front()<<' ';
        q.pop();
    }
}
/*
         ଘ(੭ˊᵕˋ)੭* ੈ✩‧˚huynhyen1609<3
*/
/*
6 12
2 5 3 4 1 6
10 45 25 30 5 47 31 35 4 50 33 20
*/

컴파일 시 표준 에러 (stderr) 메시지

mat.cpp:77:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   77 | main()
      | ^~~~

• Subtask 1: 9 / 9
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 9 / 9
• Subtask 5: 9 / 9
• Subtask 6: 9 / 9
• Subtask 7: 9 / 9
• Subtask 8: 9 / 9
• Subtask 9: 8 / 8
• Subtask 10: 10 / 10
• Subtask 11: 10 / 10