Submission #848608

#	Time	Username	Problem	Language	Result	Execution time	Memory
848608		Darren0724	Luxury burrow (IZhO13_burrow)	C++17	0 / 100	110 ms	544 KiB

burrow

#include <bits/stdc++.h>
using namespace std;
const int N=1005;
int v[N][N];
int a[N];
int cal(){
    vector<int> st;
    int ans=0;
    for(int i=0;i<N;i++){
        while(st.size()&&a[st.back()]>a[i]){
            ans=max(ans,(i-st.back())*a[st.back()]);
            st.pop_back();
        }
        st.push_back(i);
    }
    return ans;
}
int solve(int m){
    int ans=0;
    for(int j=0;j<N;j++){
        a[j]=0;
    }
    for(int i=0;i<N;i++){
        for(int j=0;j<N;j++){
            if(v[i][j]>=m){
                a[j]++;
            }
            else{
                a[j]=0;
            }
        }
        ans=max(ans,cal());
    }
    return ans;
}
int32_t main() {
    int n,m,k;cin>>n>>m>>k;
    for(int i=0;i<n;i++){
        for(int j=0;j<m;j++){
            cin>>v[i][j];
        }
    }
    int l=0,r=1e9+5;
    while(r-l>1){
        int mi=(l+r)>>1;
        if(solve(mi)>=k){
            l=mi;
        }
        else{
            r=mi;
        }
    }
    cout<<l<<' '<<solve(l)<<endl;
    
    return 0;
}

• Subtask 1: 0 / 100