oj.uz

Submission #93912

# Submission time Handle Problem Language Result Execution time Memory
93912 2019-01-13T07:06:05 Z brcode The Kingdom of JOIOI (JOI17_joioi) C++14
100 / 100
 1964 ms 16380 KB 
#include <iostream>
#include <iomanip>
#include <vector>
#include <algorithm>
#include <map>
 
using namespace std;
const int MAXN = 2010;
int grid[2010][2010];
int n,m;
int mx;
int ans;
int mn = 1e9;
void revLin(int n, int m) {
	for (int i = 1; i <= n / 2; ++i) {
		for (int j = 1; j <= m; ++j) {
			swap(grid[i][j], grid[n - i + 1][j]); } } }
 
void revCol(int n, int m) {	
	for (int i = 1; i <= n; ++i) {
		for (int j = 1; j <= m / 2; ++j) {
			swap(grid[i][j], grid[i][m - j + 1]); } } }
bool find(int mid){
    int temp = 0;
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            if(grid[i][j]<mx-mid){
                temp = max(temp,j);
            }
        }
        for(int j=1;j<=temp;j++){
            if(grid[i][j]>mn+mid){
                return false;
            }
        }
    }
    return true;
}
int check(){
    int l = 0;
    int r = mx-mn;
	int ans = r;
    while(l<=r){
        int mid = (l+r)/2;
      
       // cout<<mid<<endl;
        if(find(mid)){
        	ans = mid;
            r = mid-1;
        }else{
            l = mid+1;
        }
    }
    return ans;
}
int main() {
    cin>>n>>m;
   
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            cin>>grid[i][j];
            mx = max(mx,grid[i][j]);
            mn = min(mn,grid[i][j]);
        }
    }
    ans = mx-mn;
    ans = min(check(),ans);
    revLin(n,m);
    ans = min(check(),ans);
    
    revCol(n,m);
 ans = min(check(),ans);
    revLin(n,m);
 ans = min(check(),ans);
    cout<<ans<<endl;
}

Subtask #1
15.0 / 15.0

# 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 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 380 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct

Subtask #2
45.0 / 45.0

# 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 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 380 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 8 ms 1400 KB Output is correct
17 Correct 16 ms 1532 KB Output is correct
18 Correct 16 ms 1524 KB Output is correct
19 Correct 17 ms 1528 KB Output is correct
20 Correct 15 ms 1448 KB Output is correct
21 Correct 20 ms 1656 KB Output is correct
22 Correct 22 ms 1660 KB Output is correct
23 Correct 21 ms 1656 KB Output is correct
24 Correct 19 ms 1468 KB Output is correct
25 Correct 23 ms 1684 KB Output is correct
26 Correct 22 ms 1656 KB Output is correct
27 Correct 20 ms 1620 KB Output is correct
28 Correct 20 ms 1784 KB Output is correct

Subtask #3
40.0 / 40.0

# 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 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 380 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 8 ms 1400 KB Output is correct
17 Correct 16 ms 1532 KB Output is correct
18 Correct 16 ms 1524 KB Output is correct
19 Correct 17 ms 1528 KB Output is correct
20 Correct 15 ms 1448 KB Output is correct
21 Correct 20 ms 1656 KB Output is correct
22 Correct 22 ms 1660 KB Output is correct
23 Correct 21 ms 1656 KB Output is correct
24 Correct 19 ms 1468 KB Output is correct
25 Correct 23 ms 1684 KB Output is correct
26 Correct 22 ms 1656 KB Output is correct
27 Correct 20 ms 1620 KB Output is correct
28 Correct 20 ms 1784 KB Output is correct
29 Correct 1129 ms 15352 KB Output is correct
30 Correct 1142 ms 16248 KB Output is correct
31 Correct 1273 ms 16172 KB Output is correct
32 Correct 1194 ms 16380 KB Output is correct
33 Correct 1030 ms 14328 KB Output is correct
34 Correct 1327 ms 16344 KB Output is correct
35 Correct 1794 ms 16216 KB Output is correct
36 Correct 1626 ms 16152 KB Output is correct
37 Correct 1964 ms 16340 KB Output is correct