#include <bits/stdc++.h>
using namespace std;
const int mxn = 2022;
int arr[mxn][mxn],lim[mxn];
int n,m;
int small = 1e9+10;
bool calc(int d){
for(lim[1] = 1;lim[1]<=m&&arr[1][lim[1]]<=small+d;lim[1]++);
for(int i = 2;i<=n;i++){
for(lim[i] = 1;lim[i]<lim[i-1]&&arr[i][lim[i]]<=small+d;lim[i]++);
}
int big = 0,small = 1e9+10;
for(int i = 1;i<=n;i++){
for(int j = m;j>=lim[i];j--)big = max(big,arr[i][j]),small = min(small,arr[i][j]);
}
return big-small<=d;
}
bool f(int d){
bool flag = false;
flag = calc(d);
for(int i = 1;i<=n;i++)reverse(arr[i]+1,arr[i]+1+m);
flag = flag||calc(d);
reverse(arr+1,arr+n+1);
flag = flag||calc(d);
for(int i = 1;i<=n;i++)reverse(arr[i]+1,arr[i]+1+m);
flag = flag||calc(d);
return flag;
}
int main(){
ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
cin>>n>>m;
int big = 0;
for(int i = 1;i<=n;i++)
for(int j = 1;j<=m;j++)cin>>arr[i][j],big = max(big,arr[i][j]),small = min(small,arr[i][j]);
int l = 0,r = big;
while(l != r){
int mid = (l+r)>>1;
if(f(mid))r = mid;
else l = mid+1;
}
cout<<l;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
324 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
1 ms |
340 KB |
Output is correct |
| 7 |
Correct |
1 ms |
340 KB |
Output is correct |
| 8 |
Correct |
1 ms |
340 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
1 ms |
328 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
324 KB |
Output is correct |
| 14 |
Correct |
1 ms |
328 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
324 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
1 ms |
340 KB |
Output is correct |
| 7 |
Correct |
1 ms |
340 KB |
Output is correct |
| 8 |
Correct |
1 ms |
340 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
1 ms |
328 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
324 KB |
Output is correct |
| 14 |
Correct |
1 ms |
328 KB |
Output is correct |
| 15 |
Correct |
1 ms |
340 KB |
Output is correct |
| 16 |
Correct |
4 ms |
1880 KB |
Output is correct |
| 17 |
Correct |
11 ms |
2132 KB |
Output is correct |
| 18 |
Correct |
11 ms |
2128 KB |
Output is correct |
| 19 |
Correct |
10 ms |
2132 KB |
Output is correct |
| 20 |
Correct |
10 ms |
1972 KB |
Output is correct |
| 21 |
Correct |
22 ms |
2260 KB |
Output is correct |
| 22 |
Correct |
15 ms |
2260 KB |
Output is correct |
| 23 |
Correct |
15 ms |
2244 KB |
Output is correct |
| 24 |
Correct |
13 ms |
2004 KB |
Output is correct |
| 25 |
Correct |
14 ms |
2300 KB |
Output is correct |
| 26 |
Correct |
15 ms |
2304 KB |
Output is correct |
| 27 |
Correct |
15 ms |
2304 KB |
Output is correct |
| 28 |
Correct |
16 ms |
2252 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
324 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
1 ms |
340 KB |
Output is correct |
| 7 |
Correct |
1 ms |
340 KB |
Output is correct |
| 8 |
Correct |
1 ms |
340 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
1 ms |
328 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
324 KB |
Output is correct |
| 14 |
Correct |
1 ms |
328 KB |
Output is correct |
| 15 |
Correct |
1 ms |
340 KB |
Output is correct |
| 16 |
Correct |
4 ms |
1880 KB |
Output is correct |
| 17 |
Correct |
11 ms |
2132 KB |
Output is correct |
| 18 |
Correct |
11 ms |
2128 KB |
Output is correct |
| 19 |
Correct |
10 ms |
2132 KB |
Output is correct |
| 20 |
Correct |
10 ms |
1972 KB |
Output is correct |
| 21 |
Correct |
22 ms |
2260 KB |
Output is correct |
| 22 |
Correct |
15 ms |
2260 KB |
Output is correct |
| 23 |
Correct |
15 ms |
2244 KB |
Output is correct |
| 24 |
Correct |
13 ms |
2004 KB |
Output is correct |
| 25 |
Correct |
14 ms |
2300 KB |
Output is correct |
| 26 |
Correct |
15 ms |
2304 KB |
Output is correct |
| 27 |
Correct |
15 ms |
2304 KB |
Output is correct |
| 28 |
Correct |
16 ms |
2252 KB |
Output is correct |
| 29 |
Correct |
631 ms |
37308 KB |
Output is correct |
| 30 |
Correct |
642 ms |
37668 KB |
Output is correct |
| 31 |
Correct |
645 ms |
39244 KB |
Output is correct |
| 32 |
Correct |
716 ms |
39188 KB |
Output is correct |
| 33 |
Correct |
612 ms |
34308 KB |
Output is correct |
| 34 |
Correct |
652 ms |
39244 KB |
Output is correct |
| 35 |
Correct |
1060 ms |
51920 KB |
Output is correct |
| 36 |
Correct |
967 ms |
49728 KB |
Output is correct |
| 37 |
Correct |
1020 ms |
50504 KB |
Output is correct |
