oj.uz

Submission #685266

# Submission time Handle Problem Language Result Execution time Memory
685266 2023-01-23T19:41:46 Z Summers Luxury burrow (IZhO13_burrow) C++14
100 / 100
 1123 ms 27052 KB 
#include<bits/stdc++.h>
#include<stack>
#define endl '\n'
using namespace std;
long long n,m,k,num=0, a[1002][1002], s[1002][1002], b[1002];
stack< pair<long long,long long> >l[1002],r[1002];
long long ll[1003], rr[1003];
long long maxar()
{
    num++;
    long long i,j, ans=-1;

    for(j=1;j<=m;j++)b[j]=s[1][j];

    for(j=1;j<=m;j++)
    {
        while(!l[num].empty() && l[num].top().first>=b[j])
        {
            l[num].pop();
        }
        if(!l[num].empty())ll[j]=l[num].top().second;
        else ll[j]=0;

        l[num].push({b[j],j});
    }
    for(j=m;j>=1;j--)
    {
        while(!r[num].empty() && r[num].top().first>=b[j])
        {
            r[num].pop();
        }
        if(!r[num].empty())rr[j]=r[num].top().second;
        else rr[j]=m+1;

        r[num].push({b[j],j});
    }

    for(j=1;j<=m;j++)
    {
        ans=max(ans, b[j]*(rr[j]-ll[j]-1));
    }

    for(i=2;i<=n;i++)
    {
        for(j=1;j<=m;j++)
        {
            if(s[i][j]==0)b[j]=0;
            else b[j]++;
        }
        while(!l[num].empty())l[num].pop();
        while(!r[num].empty())r[num].pop();

         for(j=1;j<=m;j++)
        {
        while(!l[num].empty() && l[num].top().first>=b[j])
        {
            l[num].pop();
        }
        if(!l[num].empty())ll[j]=l[num].top().second;
        else ll[j]=0;

        l[num].push({b[j],j});

    }
    for(j=m;j>=1;j--)
    {
        while(!r[num].empty() && r[num].top().first>=b[j])
        {
            r[num].pop();
        }
        if(!r[num].empty())rr[j]=r[num].top().second;
        else rr[j]=m+1;

        r[num].push({b[j],j});
    }

    for(j=1;j<=m;j++)
    {
        ans=max(ans, b[j]*(rr[j]-ll[j]-1));
    }
    }
    return ans;
}

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    long long i,j,b,c,le,ri,mid,mini=1000000000000,maxi=0;

    cin>>n>>m>>k;

    for(i=1;i<=n;i++)
    {
        for(j=1;j<=m;j++)
        {
            cin>>a[i][j];
            mini=min(mini, a[i][j]);
            maxi=max(maxi, a[i][j]);
        }
    }
    le=mini; ri=maxi+10;

    while(le+1<ri)
    {
        mid=(le+ri)/2;

        for(i=1;i<=n;i++)
        {
            for(j=1;j<=m;j++)
            {
                if(a[i][j]>=mid)s[i][j]=1;
                else s[i][j]=0;
            }
        }

        c=maxar();
        if(c>=k)le=mid;
        else ri=mid;
    }
    for(i=1;i<=n;i++)
        {
            for(j=1;j<=m;j++)
            {
                if(a[i][j]>=le)s[i][j]=1;
                else s[i][j]=0;
            }
        }

        c=maxar();
    cout<<le<<" "<<c<<endl;;

}

Compilation message

burrow.cpp: In function 'int main()':
burrow.cpp:91:19: warning: unused variable 'b' [-Wunused-variable]
   91 |     long long i,j,b,c,le,ri,mid,mini=1000000000000,maxi=0;
      |                   ^

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1620 KB Output is correct
2 Correct 1 ms 1620 KB Output is correct
3 Correct 1 ms 1816 KB Output is correct
4 Correct 2 ms 1748 KB Output is correct
5 Correct 2 ms 1944 KB Output is correct
6 Correct 2 ms 2004 KB Output is correct
7 Correct 2 ms 1620 KB Output is correct
8 Correct 5 ms 2620 KB Output is correct
9 Correct 11 ms 3700 KB Output is correct
10 Correct 43 ms 4176 KB Output is correct
11 Correct 92 ms 5264 KB Output is correct
12 Correct 22 ms 6612 KB Output is correct
13 Correct 59 ms 3648 KB Output is correct
14 Correct 77 ms 7884 KB Output is correct
15 Correct 78 ms 7944 KB Output is correct
16 Correct 134 ms 8468 KB Output is correct
17 Correct 55 ms 10048 KB Output is correct
18 Correct 367 ms 13776 KB Output is correct
19 Correct 241 ms 14516 KB Output is correct
20 Correct 823 ms 19804 KB Output is correct
21 Correct 742 ms 22152 KB Output is correct
22 Correct 1118 ms 27052 KB Output is correct
23 Correct 1123 ms 27000 KB Output is correct
24 Correct 397 ms 19468 KB Output is correct
25 Correct 354 ms 20216 KB Output is correct