#include <bits/stdc++.h>
#define int long long
#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;
int iter = 0;
while(iter < 35){
iter++;
int mid = L+R>>1;
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;
}
}
for(int i=1;i<=n;i++){
vector<int> v;
vector<int> l(m+2), r(m+2);
v.push_back(0);
for(int j=1;j<=m;j++){
v.push_back(h[i][j]);
}
vector<pair<int, int>> q;
q.push_back({0, 0});
for(int j=1;j<=m;j++){
if(v[j] == 0)q.clear(),q.push_back({0, j});
else {
while(q.back().first >= v[j])q.pop_back();
int lst = q.back().second;
l[j] = lst;
q.push_back({v[j], j});
}
}
q.clear();
q.push_back({0,m+1});
for(int j=m;j>=1;j--){
if(v[j] == 0)q.clear(),q.push_back({0, j});
else {
while(q.back().first >= v[j])q.pop_back();
int lst = q.back().second;
r[j] = lst;
q.push_back({v[j], j});
}
}
for(int j=1;j<=m;j++){
chmax(ans, (r[j]-l[j]-1)*v[j]);
}
}// end fermer-2 ------------------------
if(ans >= k){
L = mid;
if(mid >= resmn){
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;
}
Compilation message
burrow.cpp: In function 'void Solve()':
burrow.cpp:25:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
25 | int mid = L+R>>1;
| ~^~
| # |
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 |
- |
