oj.uz

Submission #821360

# Submission time Handle Problem Language Result Execution time Memory
821360 2023-08-11T09:31:35 Z PVM_pvm Watermelon (INOI20_watermelon) C++17
7 / 100
 2000 ms 2732 KB 
#include<bits/stdc++.h>
using namespace std;
#define MAXX 100007
#define MAXN 13
int b[MAXX],n,k;
struct perm
{
    int ch[MAXN];
    perm(int a[])
    {
        for (int q=1;q<=n;q++) ch[q]=a[q];
    }
    void show()
    {
        //cout<<"P:";
        for (int q=1;q<=n;q++) cout<<ch[q]<<" ";
        cout<<"\n";
    }
};
vector<perm> ans;
int cur[MAXN],sb[MAXN];
bool dt[MAXN];
void check()
{
    for (int q=1;q<=n;q++) sb[q]=-1;
    for (int q=1;q<=n;q++) dt[q]=false;
    for (int tm=1;true;tm++)
    {
        bool smyrt=false;
        for (int q=1;q<=n;q++)
        {
            if (dt[q]) continue;
            int next=q+1;
            for (next=q+1;next<=n;next++)
            {
                if (!dt[next]) break;
            }
            if (next>n) break;
            if (cur[next]>cur[q])
            {
                dt[q]=true;
                smyrt=true;
                sb[q]=tm;
            }
        }
        if (!smyrt) break;
    }
    bool pr=true;
    for (int q=1;q<=n;q++)
    {
        if (sb[q]!=b[q]) pr=false;
    }
    if (pr)
    {
        perm spr(cur);
        ans.push_back(spr);
    }
}
int ind[MAXN];
int ind2[MAXN];
bool cmp(perm &a, perm &b){
    for (int q=1;q<=n;q++)
    {
        ind[a.ch[q]] = q;
        ind2[b.ch[q]] = q;
    }
    for (int q=1;q<=n;q++)
    {
        if (ind[q] < ind2[q]) return 1;
        if (ind[q] > ind2[q]) return 0;
    }
    return 0;
}
struct node
{
    int sm;
    int pos;
    int lz;
} seg[4*MAXX];
void Initialise(int ind, int l, int r)
{
    if (l==r)
    {
        if (b[l]==-1)
        {
            seg[ind].sm=n*2;
        }
        else
        {
            seg[ind].sm=b[l];
        }
        seg[ind].pos=l;
        seg[ind].lz=0;
        return;
    }
    int mid=(l+r)/2;
    Initialise(ind*2,l,mid);
    Initialise(ind*2+1,mid+1,r);
    if (seg[ind*2].sm<=seg[ind*2+1].sm)
    {
        seg[ind].sm=seg[ind*2].sm;
        seg[ind].pos=seg[ind*2].pos;
    }
    else
    {
        seg[ind].sm=seg[ind*2+1].sm;
        seg[ind].pos=seg[ind*2+1].pos;
    }
    seg[ind].lz=0;
}
void Push(int ind, int l, int r)
{
    if (seg[ind].lz==0) return;
    seg[ind].sm-=seg[ind].lz;
    if (l!=r)
    {
        seg[ind*2].lz+=seg[ind].lz;
        seg[ind*2+1].lz+=seg[ind].lz;
    }
    seg[ind].lz=0;
}
void Update(int ind, int l, int r, int ql, int qr)
{
    Push(ind,l,r);
    if (l>=ql && r<=qr)
    {
        seg[ind].lz++;
        Push(ind,l,r);
        return;
    }
    int mid=(l+r)/2;
    if (ql<=mid) Update(ind*2,l,mid,ql,qr);
    if (qr>=mid+1) Update(ind*2+1,mid+1,r,ql,qr);
    Push(ind*2,l,mid);
    Push(ind*2+1,mid+1,r);
    if (seg[ind*2].sm<=seg[ind*2+1].sm)
    {
        seg[ind].sm=seg[ind*2].sm;
        seg[ind].pos=seg[ind*2].pos;
    }
    else
    {
        seg[ind].sm=seg[ind*2+1].sm;
        seg[ind].pos=seg[ind*2+1].pos;
    }
}
void UpdateCh(int ind, int l, int r, int pos)
{
    Push(ind,l,r);
    if (l==r && l==pos)
    {
        seg[ind].sm=n*2;
        seg[ind].pos=l;
        seg[ind].lz=0;
        return;
    }
    int mid=(l+r)/2;
    if (pos<=mid) UpdateCh(ind*2,l,mid,pos);
    if (pos>=mid+1) UpdateCh(ind*2+1,mid+1,r,pos);
    Push(ind*2,l,mid);
    Push(ind*2+1,mid+1,r);
    if (seg[ind*2].sm<=seg[ind*2+1].sm)
    {
        seg[ind].sm=seg[ind*2].sm;
        seg[ind].pos=seg[ind*2].pos;
    }
    else
    {
        seg[ind].sm=seg[ind*2+1].sm;
        seg[ind].pos=seg[ind*2+1].pos;
    }
}
int ansk[MAXX];
int pr1[MAXX];
int chb[MAXX];
bool finalcheck()
{
    stack<pair<int,int>> st;
    chb[n]=-1;
    st.push({ansk[n],n});
    for (int q=n-1;q>=1;q--)
    {
        while (true)
        {
            if (st.empty())
            {
                chb[q]=-1;
                st.push({ansk[q],q});
                break;
            }
            int chislo = st.top().first;
            int pos = st.top().second;
            if (ansk[q]>chislo)
            {
                st.pop();
                continue;
            }
            chb[q]=pos-q;
            st.push({ansk[q],q});
            break;
        }
    }
    for (int q=1;q<=n;q++)
    {
        if (chb[q]!=b[q]) return false;
    }
    return true;
}
int main()
{
    cin>>n>>k;
    if (k!=1)
    {
        for (int q=1;q<=n;q++) cin>>b[q];
        for (int q=1;q<=n;q++) cur[q]=q;
        check();
        while (next_permutation(cur+1,cur+n+1)) check();
        sort(ans.begin(),ans.end(),cmp);
        if (k<ans.size()) ans[k-1].show();
        else cout<<"-1\n";
    }
    else
    {
        for (int q=1;q<=n;q++) cin>>b[q];
        /*if (b[n]!=-1)
        {
            cout<<"-1\n";
            return 0;
        }*/
        int br2=0;
        for (int q=1;q<=n;q++)
        {
            if (b[q]!=-1) br2++;
        }
        pr1[0]=0;
        for (int q=1;q<=n;q++)
        {
            if (b[q-1]<b[q]) pr1[q]=q-1;
            else pr1[q]=pr1[q-1];
        }
        Initialise(1,1,n);
        int tm=0;
        for (tm=1;tm<n;tm++)
        {
            Push(1,1,n);
            int sm=seg[1].sm;
            int pos=seg[1].pos;
            if (sm!=1) break;
            ansk[pos]=tm;
            UpdateCh(1,1,n,pos);
            if (pos!=1) Update(1,1,n,pr1[pos]+1,pos-1);
        }
        /*if (tm-1 != br2)
        {
            cout<<"-1\n";
            return 0;
        }*/
        tm=n;
        for (int q=1;q<=n;q++)
        {
            if (ansk[q]==0)
            {
                ansk[q]=tm;
                tm--;
            }
        }
        if (finalcheck())
        {
            for (int q=1;q<=n;q++)
            {
                cout<<ansk[q]<<" ";
            }
            cout<<"\n";
        }
        else
        {
            cout<<"-1\n";
        }
    }
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:219:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<perm>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  219 |         if (k<ans.size()) ans[k-1].show();
      |             ~^~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 308 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 308 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 389 ms 568 KB Output is correct
13 Correct 387 ms 588 KB Output is correct
14 Correct 400 ms 384 KB Output is correct
15 Correct 384 ms 432 KB Output is correct
16 Correct 371 ms 460 KB Output is correct
17 Correct 413 ms 392 KB Output is correct
18 Correct 33 ms 332 KB Output is correct
19 Correct 380 ms 288 KB Output is correct
20 Correct 414 ms 292 KB Output is correct
21 Correct 387 ms 296 KB Output is correct
22 Correct 397 ms 288 KB Output is correct
23 Correct 399 ms 212 KB Output is correct
24 Correct 401 ms 212 KB Output is correct
25 Correct 375 ms 292 KB Output is correct
26 Correct 372 ms 292 KB Output is correct
27 Correct 384 ms 292 KB Output is correct
28 Correct 416 ms 288 KB Output is correct
29 Correct 374 ms 392 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 4 ms 212 KB Output is correct
32 Correct 4 ms 212 KB Output is correct
33 Correct 4 ms 308 KB Output is correct

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 308 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 308 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 389 ms 568 KB Output is correct
13 Correct 387 ms 588 KB Output is correct
14 Correct 400 ms 384 KB Output is correct
15 Correct 384 ms 432 KB Output is correct
16 Correct 371 ms 460 KB Output is correct
17 Correct 413 ms 392 KB Output is correct
18 Correct 33 ms 332 KB Output is correct
19 Correct 380 ms 288 KB Output is correct
20 Correct 414 ms 292 KB Output is correct
21 Correct 387 ms 296 KB Output is correct
22 Correct 397 ms 288 KB Output is correct
23 Correct 399 ms 212 KB Output is correct
24 Correct 401 ms 212 KB Output is correct
25 Correct 375 ms 292 KB Output is correct
26 Correct 372 ms 292 KB Output is correct
27 Correct 384 ms 292 KB Output is correct
28 Correct 416 ms 288 KB Output is correct
29 Correct 374 ms 392 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 4 ms 212 KB Output is correct
32 Correct 4 ms 212 KB Output is correct
33 Correct 4 ms 308 KB Output is correct
34 Execution timed out 2063 ms 212 KB Time limit exceeded
35 Halted 0 ms 0 KB -

Subtask #3
0 / 31.0

# Verdict Execution time Memory Grader output
1 Incorrect 23 ms 2732 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 23 ms 2732 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 308 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 308 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 389 ms 568 KB Output is correct
13 Correct 387 ms 588 KB Output is correct
14 Correct 400 ms 384 KB Output is correct
15 Correct 384 ms 432 KB Output is correct
16 Correct 371 ms 460 KB Output is correct
17 Correct 413 ms 392 KB Output is correct
18 Correct 33 ms 332 KB Output is correct
19 Correct 380 ms 288 KB Output is correct
20 Correct 414 ms 292 KB Output is correct
21 Correct 387 ms 296 KB Output is correct
22 Correct 397 ms 288 KB Output is correct
23 Correct 399 ms 212 KB Output is correct
24 Correct 401 ms 212 KB Output is correct
25 Correct 375 ms 292 KB Output is correct
26 Correct 372 ms 292 KB Output is correct
27 Correct 384 ms 292 KB Output is correct
28 Correct 416 ms 288 KB Output is correct
29 Correct 374 ms 392 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 4 ms 212 KB Output is correct
32 Correct 4 ms 212 KB Output is correct
33 Correct 4 ms 308 KB Output is correct
34 Execution timed out 2063 ms 212 KB Time limit exceeded
35 Halted 0 ms 0 KB -