Submission #1268456

#	Time	Username	Problem	Language	Result	Execution time	Memory
1268456		MMihalev	JOIRIS (JOI16_joiris)	C++20	15 / 100	2 ms	328 KiB

joiris

#include<iostream>
#include<vector>
using namespace std;
const int MAX_N=55;
const int MAX=202;
bool stat[MAX+5][MAX+5];
int a[MAX_N];
int n,k;
vector<pair<int,int>>ans;
void rem(int target_row)
{
    for(int row=target_row;row<=MAX;row++)
    {
        for(int col=1;col<=n;col++)
        {
            stat[row][col]=stat[row+1][col];
        }
    }
}
bool full(int row)
{
    for(int col=1;col<=n;col++)
    {
        if(stat[row][col]==0)return 0;
    }
    return 1;
}
void fix()
{
    for(int row=1;row<=MAX;row++)
    {
        while(full(row))rem(row);
    }
    for(int col=1;col<=n;col++)
    {
        a[col]=0;
        while(stat[a[col]+1][col])a[col]++;
    }
}
void puthorizontal(int x)
{
    int y=0;
    for(int col=x;col<=x+k-1;col++)
    {
        y=max(y,a[col]);
    }
    for(int col=x;col<=x+k-1;col++)
    {
        stat[y+1][col]=1;
    }
    fix();
    ans.push_back({2,x});
}
void putvertical(int x)
{
    int y=a[x]+1;
    for(int row=y;row<=y+k-1;row++)
    {
        stat[row][x]=1;
    }
    fix();
    ans.push_back({1,x});
}
int firstbad()
{
    for(int i=2;i<=n;i++)
    {
        if(a[i]<a[i-1])return i;
    }
    return n+1;
}
int sum()
{
    int res=0;
    for(int i=1;i<=n;i++)res+=a[i];
    return res;
}
int zeroes()
{
    ///assuming that we enter with at least one positive
    for(int i=2;i<=n;i++)
    {
        if(a[i]!=0)return i-1;
    }
}
int lessthaneq(int val)
{
    for(int i=1;i<=n;i++)
    {
        if(a[i]>val)return i-1;
    }
    return n;
}
void check()
{
    for(int i=1;i<=n;i++)
    {
        cout<<a[i]<<" ";
    }cout<<"\n";
}
void print()
{
    cout<<ans.size()<<"\n";
    for(auto [type,where]:ans)
    {
        cout<<type<<" "<<where<<"\n";
    }
}
void solvek2even()
{
    if(sum()%2==1)
    {
        cout<<-1<<"\n";
        return;
    }

    while(firstbad()<=n)
    {
        int i=firstbad();
        while(a[i]<a[i-1])
        {
            putvertical(i);
            //check();
        }
    }

    while(sum()!=0)
    {
        int idxzeroes=zeroes();
        int nextval=a[idxzeroes+1];
        nextval=(nextval/2);
        while(nextval>0)
        {
            for(int i=1;i<=idxzeroes;i++)
            {
                putvertical(i);
            }
            nextval--;
        }

        if(a[idxzeroes+1]%2==0)continue;

        for(int i=idxzeroes-1;i>=1;i-=2)
        {
            puthorizontal(i);
        }
        if(idxzeroes%2==0)continue;

        int idxsecondbest=lessthaneq(1);
        for(int i=idxsecondbest-1;i>=1;i-=2)
        {
            puthorizontal(i);
        }

        if(idxsecondbest%2==1)
        {
            putvertical(1);
        }
    }
    print();
}
int main ()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);

    cin>>n>>k;
    for(int i=1;i<=n;i++)
    {
        cin>>a[i];
        for(int row=1;row<=a[i];row++)stat[row][i]=1;
    }

    if(k==2)
    {
        if(n%2==0)solvek2even();
        else;
    }
    else
    {
        ;
    }

    return 0;
}

Compilation message (stderr)

joiris.cpp: In function 'int zeroes()':
joiris.cpp:85:1: warning: control reaches end of non-void function [-Wreturn-type]
   85 | }
      | ^

• Subtask 1: 15 / 15
• Subtask 2: 0 / 15
• Subtask 3: 0 / 15
• Subtask 4: 0 / 55