#include <bits/stdc++.h>
using namespace std;
//#define int long long
#define pii pair<int,int>
#define OK puts("OK");
#define NO puts("NO");
#define YES puts("YES");
#define fr first
#define sc second
#define ret return
#define scan1(a) scanf("%d",&a);
#define scan2(a,b) scanf("%d %d",&a, &b);
#define scan3(a,b,c) scanf("%d %d %d",&a,&b,&c);
#define all(s) s.begin(),s.end()
#define allr(s) s.rbegin(),s.rend()
#define pb push_back
#define sz(v) (int)v.size()
#define endi puts("");
#define eps 1e-12
const int N = 1e5+12,INF=1e9+7;
int q[2001][2001],l[2001][2001],a[2001][2001],n,m;
int le[N],re[N];
int fun(){
int ans=0,i,j;
for (i=1;i<=n;++i){
for (j=1;j<=m;++j){
if (q[i][j] == 1){
l[i][j] = l[i-1][j]+1;
}
else
l[i][j]=0;
}
}
for (i=1;i<=n;++i){
vector <pii> v;
v.pb({0,0});
for (j=1;j<=m;++j){
if (l[i][j] == 0){
v.clear();
v.pb({0,j});
}
else {
while (!v.empty() && l[i][j] <= v.back().fr)
v.pop_back();
le[j]=v.back().sc;
v.pb({l[i][j],j});
}
}v.clear();
v.pb({0,m+1});
for (j=m;j>=1;j--){
if (l[i][j] == 0){
v.clear();
v.pb({0,j});
}
else {
while (!v.empty() && l[i][j] <= v.back().fr)
v.pop_back();
re[j]=v.back().sc;
v.pb({l[i][j],j});
}
}
for(j=1;j<=m;j++)
ans=max(ans,(re[j]-le[j]-1)*l[i][j]);
}
ret ans;
}
void full(int x){
int i,j;
for (i=1;i<=n;++i){
for (j=1;j<=m;++j){
if (a[i][j] >= x){
q[i][j]=1;
}
else q[i][j]=0;
l[i][j]=0;
}
}
}
main(){
int i,j,k;
scan3(n,m,k)
for (i=1;i<=n;++i){
for (j=1;j<=m;++j){
scan1(a[i][j])
}
}
int l=1,r=INF;
while (r-l>1){
int m = l+r>>1;
full(m);
int x = fun();
if (x >= k){
l=m;
}
else {
r=m;
}
}
full(r);
int x = fun();
if (x >= k)l=r;
full(l);
x = fun();
cout <<l<<" "<<x;
}
Compilation message
burrow.cpp:81:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
81 | main(){
| ^
burrow.cpp: In function 'int main()':
burrow.cpp:92:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
92 | int m = l+r>>1;
| ~^~
burrow.cpp:13:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
13 | #define scan3(a,b,c) scanf("%d %d %d",&a,&b,&c);
| ~~~~~^~~~~~~~~~~~~~~~~~~~~
burrow.cpp:83:5: note: in expansion of macro 'scan3'
83 | scan3(n,m,k)
| ^~~~~
burrow.cpp:11:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
11 | #define scan1(a) scanf("%d",&a);
| ~~~~~^~~~~~~~~
burrow.cpp:87:13: note: in expansion of macro 'scan1'
87 | scan1(a[i][j])
| ^~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
492 KB |
Output is correct |
| 4 |
Correct |
1 ms |
620 KB |
Output is correct |
| 5 |
Correct |
2 ms |
748 KB |
Output is correct |
| 6 |
Correct |
2 ms |
876 KB |
Output is correct |
| 7 |
Correct |
2 ms |
364 KB |
Output is correct |
| 8 |
Correct |
13 ms |
1788 KB |
Output is correct |
| 9 |
Correct |
22 ms |
3072 KB |
Output is correct |
| 10 |
Correct |
43 ms |
3564 KB |
Output is correct |
| 11 |
Correct |
81 ms |
4716 KB |
Output is correct |
| 12 |
Correct |
58 ms |
7148 KB |
Output is correct |
| 13 |
Correct |
53 ms |
2540 KB |
Output is correct |
| 14 |
Correct |
169 ms |
7708 KB |
Output is correct |
| 15 |
Correct |
172 ms |
7788 KB |
Output is correct |
| 16 |
Correct |
179 ms |
8192 KB |
Output is correct |
| 17 |
Correct |
233 ms |
9856 KB |
Output is correct |
| 18 |
Correct |
433 ms |
14572 KB |
Output is correct |
| 19 |
Correct |
531 ms |
16492 KB |
Output is correct |
| 20 |
Correct |
843 ms |
23096 KB |
Output is correct |
| 21 |
Correct |
908 ms |
26988 KB |
Output is correct |
| 22 |
Correct |
1161 ms |
33560 KB |
Output is correct |
| 23 |
Correct |
1159 ms |
33388 KB |
Output is correct |
| 24 |
Correct |
778 ms |
23532 KB |
Output is correct |
| 25 |
Correct |
942 ms |
26792 KB |
Output is correct |
