#include <bits/stdc++.h>
#define all(x) (x).begin(), (x).end()
typedef long long ll;
using namespace std;
template<class T> bool chmin(T& a, const T& b){return a>b?a=b,true:false;}
template<class T> bool chmax(T& a, const T& b){return a<b?a=b,true:false;}
const int N = 1005;
const int inf = 100200300;
int n, m, k;
int a[N][N], inp[N][N];
int h[N][N];
void Solve(){
cin >> n >> m >> k;
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++){
cin >> inp[i][j];
}
}
int l = -1, r = inf;
int resmn = 0, resmx = 0;
while(l+1 < r){
// cout << l << ' ' << r << '\n';
int mid = (l+r)/2;
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++){
if(inp[i][j] >= mid){
a[i][j] = 1;
}else a[i][j] = 0;
}
}
// start fermer-2 ------------------------
int ans = 0;
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++){
if(a[i][j] == 0)h[i][j] = 0;
else h[i][j] = h[i-1][j] + 1;
chmax(ans, h[i][j]);
}
}
for(int i=1;i<=n;i++){
vector<int> v;
v.push_back(0);
for(int j=1;j<=m;j++){
v.push_back(h[i][j]);
}
vector<pair<int, int>> q;
for(int j=1;j<=m;j++){
int lst = j;
while(q.size() && q.back().first >= v[j]){
lst = q.back().second;
q.pop_back();
}
if(v[j] > 0)q.push_back({v[j], lst});
if(q.size() > 1){
auto [x2, y2] = q[q.size()-1];
auto [x1, y1] = q[q.size()-2];
chmax(ans, (y2-y1+1)*x1);
chmax(ans, (j-y1+1)*x1);
}
if(q.size()){
auto [x1, y1] = q[q.size()-1];
chmax(ans, (j-y1+1)*x1);
}
}
}
for(int i=1;i<=n;i++){
vector<int> v;
v.push_back(0);
for(int j=m;j>=1;j--){
v.push_back(h[i][j]);
}
vector<pair<int, int>> q;
for(int j=1;j<=m;j++){
int lst = j;
while(q.size() && q.back().first >= v[j]){
lst = q.back().second;
q.pop_back();
}
if(v[j] > 0)q.push_back({v[j], lst});
if(q.size() > 1){
auto [x2, y2] = q[q.size()-1];
auto [x1, y1] = q[q.size()-2];
chmax(ans, (y2-y1+1)*x1);
chmax(ans, (j-y1+1)*x1);
}if(q.size()){
auto [x1, y1] = q[q.size()-1];
chmax(ans, (j-y1+1)*x1);
}
}
}// end fermer-2 ------------------------
if(ans >= k){
l = mid;
if(chmax(resmn, mid)){
resmx = ans;
}
}else r = mid;
}
cout << resmn << ' ' << resmx << '\n';
}
signed main(){
ios_base::sync_with_stdio(false);
cin.tie();
int t=1;
while(t--)Solve();
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
364 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
