#include <bits/stdc++.h>
using namespace std;
const int N = 1005;
int t[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[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[v] = min(t[v*2],t[v*2+1]);
}
int query(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[v];
int m = (s+e)/2;
return min(query(v*2,s,m,l,min(m,r)),query(v*2+1,m+1,e,max(l,m+1),r));
}
int n,m,k;
int get(int x){
// cout<<x<<endl;
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));
memset(t,0,sizeof(t));
build(i,1,1,m);
for(int j = 1;j<=m;j++){
int u = a[i][j];
int l = j,r = j;
int lans = l,rans = r;
int lo = j,hi = m;
while(lo<=hi){
int mid = (lo+hi)/2;
// cout<<j<<" "<<mid<<endl;
int mn = query(1,1,m,j,mid);
if(mn>=u){
rans = mid;
lo = mid+1;
}
else hi = mid-1;
}
lo = 1;
hi = j;
while(lo<=hi){
int mid = (lo+hi)/2;
int mn = query(1,1,m,mid,j);
if(mn>=u){
lans = mid;
hi = mid-1;
}
else lo = mid+1;
}
u*=(rans-lans+1);
mxs = max(mxs,u);
L[j] = l;
R[j] = r;
}
}
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 main()':
burrow.cpp:77:10: 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:82:22: 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 |
376 KB |
Output is correct |
| 3 |
Correct |
2 ms |
520 KB |
Output is correct |
| 4 |
Correct |
4 ms |
596 KB |
Output is correct |
| 5 |
Correct |
7 ms |
740 KB |
Output is correct |
| 6 |
Correct |
5 ms |
740 KB |
Output is correct |
| 7 |
Correct |
16 ms |
740 KB |
Output is correct |
| 8 |
Correct |
81 ms |
1380 KB |
Output is correct |
| 9 |
Correct |
200 ms |
2100 KB |
Output is correct |
| 10 |
Correct |
970 ms |
4188 KB |
Output is correct |
| 11 |
Correct |
1699 ms |
5728 KB |
Output is correct |
| 12 |
Correct |
432 ms |
5728 KB |
Output is correct |
| 13 |
Correct |
1712 ms |
5728 KB |
Output is correct |
| 14 |
Execution timed out |
2053 ms |
5728 KB |
Time limit exceeded |
| 15 |
Halted |
0 ms |
0 KB |
- |
