#pragma GCC optimize "-O3"
#include <bits/stdc++.h>
using namespace std;
const int N = 1005;
//int t[N][4*N];
int b[N][N];
int a[N][N];
int L[N];
int R[N];
/*
void build(int row,int v,int l,int r){
if(l == r){
t[row][v] = a[row][l];
return;
}
int m = (l+r)/2;
build(row,v*2,l,m);
build(row,v*2+1,m+1,r);
t[row][v] = min(t[row][v*2],t[row][v*2+1]);
}
int query(int row,int v,int s,int e,int l,int r){
if(l>r) return 1000*1000*1000+5;
if(s == l && e == r) return t[row][v];
int m = (s+e)/2;
return min(query(row,v*2,s,m,l,min(m,r)),query(row,v*2+1,m+1,e,max(l,m+1),r));
}*/
int n,m,k;
inline int get(int x){
int mxs = 0;
for(int i = 1;i<=n;i++){
for(int j = 1;j<=m;j++){
if(b[i][j] >= x) a[i][j] = a[i-1][j]+1;
else a[i][j] = 0;
}
}
for(int i = 1;i<=n;i++){
memset(L,0,sizeof(L));
memset(R,0,sizeof(R));
for(int j = 1;j<=m;j++){
int u = a[i][j];
int l = j,r = j;
L[j] = j;
while(l>1){
if(L[l]<l && L[l]) l = L[l];
else l--;
if(a[i][l]<u){
l++;
break;
}
}
// u*=(r-l+1);
// mxs = max(mxs,u);
L[j] = l;
// R[j] = r;
}
for(int j = m;j>=1;j--){
int r = j;
int u = a[i][j];
while(r<m){
if(R[r]>r) r = R[r];
else r++;
if(a[i][r]<u){
r--;
break;
}
}
R[j] = r;
}
for(int j = 1;j<=m;j++)
mxs = max(mxs,(R[j]-L[j]+1)*a[i][j]);
}
return mxs;
}
int main(){
scanf("%d%d%d",&n,&m,&k);
vector<int> all;
//map<int,int> mp;
for(int i = 1;i<=n;i++){
for(int j = 1;j<=m;j++){
scanf("%d",&b[i][j]);
// if(!mp[b[i][j]]){
all.push_back(b[i][j]);
// mp[b[i][j]] = 1;
// }
}
}
sort(all.begin(),all.end());
int l = 0;
int r = all.size()-1;
int ans = 0;
int mxs = k;
while(l<=r){
int m = (l+r)/2;
int y = get(all[m]);
if(y>=k){
ans = m;
mxs = y;
l = m+1;
}
else r = m-1;
}
cout<<all[ans]<<" "<<mxs<<endl;
return 0;
}
Compilation message
burrow.cpp: In function 'int get(int)':
burrow.cpp:41:23: warning: unused variable 'r' [-Wunused-variable]
int l = j,r = j;
^
burrow.cpp: In function 'int main()':
burrow.cpp:75:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d%d",&n,&m,&k);
~~~~~^~~~~~~~~~~~~~~~~~~
burrow.cpp:80:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d",&b[i][j]);
~~~~~^~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
3 ms |
508 KB |
Output is correct |
| 3 |
Correct |
2 ms |
508 KB |
Output is correct |
| 4 |
Correct |
2 ms |
576 KB |
Output is correct |
| 5 |
Correct |
3 ms |
616 KB |
Output is correct |
| 6 |
Correct |
3 ms |
744 KB |
Output is correct |
| 7 |
Correct |
3 ms |
744 KB |
Output is correct |
| 8 |
Correct |
9 ms |
1380 KB |
Output is correct |
| 9 |
Correct |
15 ms |
2280 KB |
Output is correct |
| 10 |
Correct |
28 ms |
2280 KB |
Output is correct |
| 11 |
Correct |
45 ms |
2820 KB |
Output is correct |
| 12 |
Correct |
35 ms |
4812 KB |
Output is correct |
| 13 |
Correct |
36 ms |
4812 KB |
Output is correct |
| 14 |
Correct |
99 ms |
4812 KB |
Output is correct |
| 15 |
Correct |
121 ms |
4812 KB |
Output is correct |
| 16 |
Correct |
105 ms |
4812 KB |
Output is correct |
| 17 |
Correct |
115 ms |
5700 KB |
Output is correct |
| 18 |
Correct |
268 ms |
7052 KB |
Output is correct |
| 19 |
Correct |
394 ms |
8224 KB |
Output is correct |
| 20 |
Correct |
576 ms |
9680 KB |
Output is correct |
| 21 |
Correct |
578 ms |
10960 KB |
Output is correct |
| 22 |
Correct |
740 ms |
15160 KB |
Output is correct |
| 23 |
Correct |
775 ms |
24768 KB |
Output is correct |
| 24 |
Correct |
612 ms |
26540 KB |
Output is correct |
| 25 |
Correct |
586 ms |
30436 KB |
Output is correct |
