oj.uz

Submission #534042

# Submission time Handle Problem Language Result Execution time Memory
534042 2022-03-07T21:32:57 Z ioi The Kingdom of JOIOI (JOI17_joioi) C++14
60 / 100
 4000 ms 196848 KB 
#include<bits/stdc++.h>
 
using namespace std;
 
#define debug(x) cout << '[' << #x << " is: " << x << "] " << endl;
#define inF freopen("6in.txt" , "r" , stdin);
#define outF freopen("6.txt" , "w" , stdout);
#define imod(a , n) (a % n + n ) % n
#define sor(v) sort(v.begin() , v.end());
#define print(v) for(auto f : v ) cout << f << " " ;
#define rsor(v) sort(v.rbegin() , v.rend());
#define rev(v) reverse(v.begin() , v.end());
#define scan(v)for(auto &it : v)cin >> it ;
#define ll long long
#define int ll
#define logar(x , y) log(x) / log(y)
#define __sum(n) n * (n + 1) / 2
#define __lcm(a , b) a / __gcd(a , b) * b
#define pii pair<int , int >
#define fastio ios_base::sync_with_stdio(false);cin.tie(0);
const int N =  2e3 + 5 ;
 
 
set<int> st ;
vector<int> v ;
 
int n , m ;
 
int arr[N][N];
int sz ;
int MN[N][N] , MXY[N][N] ,RMN[N][N] , RMX[N][N];
 
bool check(int from , int to){
    int mx = 0 , mn = 1e9 , en = n;
//cout << from << " "   << to << endl ;
    for(int c = 0 ; c < m ; c ++){
 
        int l = 0 , r = en - 1, md ;
        int ans = -1 ;
 
        int cnt = 0 ;
        while(l <= r){
 
            cnt ++ ;
            if(cnt == 15)break;
 
            md = (l + r) / 2;
 
            //debug(MXY[md][c])
 
            if(MN[md][c] >= from && MXY[md][c] <= to){
 
                    ans = md , l = md +1 ;
            }
            else r = md - 1 ;
 
 
          //  if(n + m > 2000)break;
 
        } en = min(en , ans + 1);
 
     //  debug(ans)
 
       // debug(en)
        if(en != n )mx = max(mx ,RMX[en][c]) , mn= min(mn ,RMN[en][c]);
 
 
 
    }
 
 
 
    return mx-mn <= to - from;
 
}
 
 
void process(){
 
 
    for(int j = 0 ;j < m;j ++){
 
 
        for(int i = 0 ; i < n ; i ++){
 
 
            MN[i][j]= arr[i][j] , MXY[i][j] = arr[i][j];
 
 
            if(i)MN[i][j] = min(MN[i][j] , MN[i - 1][j]) , MXY[i][j] = max(MXY[i - 1][j] , MXY[i][j]);
 
        }
 
    }
 
   for(int j = 0 ; j < m ; j ++){
 
 
        for(int i = n - 1 ; i >= 0 ; i --){
 
 
            RMN[i][j]= arr[i][j] , RMX[i][j] = arr[i][j];
 
 
            if(i != n - 1)RMN[i][j] = min(RMN[i][j] , RMN[i + 1][j]) , RMX[i][j] = max(RMX[i + 1][j] , RMX[i][j]);
        }
    }
 
 
 
 
 
}
 
int arr2[N][N];
int32_t main()
{   //inF;
    //inF;outF;
    fastio;
 
    cin >> n >> m ;
 
 
    for(int i = 0 ; i <  n; i ++){
        for(int j = 0 ; j <m; j ++){
            cin >> arr[i][j];
            arr2[i][j] =  arr[i][j];
 
            st.insert(arr[i][j]);
        }
    }
 
    for(auto f : st)v.push_back(f);
 
 
 process();
    sz = v.size();
    ll mnans = v.back() - v[0];
    for(int all = 0 ; all < 2 ; all ++){
 
 
        int  l = 0 , r = 1e9 , md ;
 
 
        int cnt = 0 ;
        while(l <= r){
 
            cnt ++ ;
            if(cnt == 32)break;
 
            md = (l + r) / 2 ;
 
 
            if(check(v[0] , v[0] + md) || check(v.back() - md , v.back()))mnans = min(mnans , md) ,  r = md- 1 ;
            else l = md + 1 ;
 
 
        }
 
 
        for(int c = 0 ; c < m ; c ++){
            for(int r = 0 ; r< n ; r ++){
                arr[r][c] = arr2[r][m - 1 - c];
               // debug(arr[r][c])
            }
        }
        process();
    }
 
    cout << mnans ;
 
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 460 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 576 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 1 ms 460 KB Output is correct
9 Correct 1 ms 460 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 1 ms 640 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 460 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 460 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 576 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 1 ms 460 KB Output is correct
9 Correct 1 ms 460 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 1 ms 640 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 1 ms 716 KB Output is correct
16 Correct 6 ms 6860 KB Output is correct
17 Correct 26 ms 9536 KB Output is correct
18 Correct 40 ms 9428 KB Output is correct
19 Correct 19 ms 9544 KB Output is correct
20 Correct 17 ms 8516 KB Output is correct
21 Correct 22 ms 9696 KB Output is correct
22 Correct 19 ms 9532 KB Output is correct
23 Correct 20 ms 9696 KB Output is correct
24 Correct 17 ms 8640 KB Output is correct
25 Correct 27 ms 9664 KB Output is correct
26 Correct 22 ms 9664 KB Output is correct
27 Correct 28 ms 9672 KB Output is correct
28 Correct 28 ms 9648 KB Output is correct

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 460 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 576 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 1 ms 460 KB Output is correct
9 Correct 1 ms 460 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 1 ms 640 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 1 ms 716 KB Output is correct
16 Correct 6 ms 6860 KB Output is correct
17 Correct 26 ms 9536 KB Output is correct
18 Correct 40 ms 9428 KB Output is correct
19 Correct 19 ms 9544 KB Output is correct
20 Correct 17 ms 8516 KB Output is correct
21 Correct 22 ms 9696 KB Output is correct
22 Correct 19 ms 9532 KB Output is correct
23 Correct 20 ms 9696 KB Output is correct
24 Correct 17 ms 8640 KB Output is correct
25 Correct 27 ms 9664 KB Output is correct
26 Correct 22 ms 9664 KB Output is correct
27 Correct 28 ms 9672 KB Output is correct
28 Correct 28 ms 9648 KB Output is correct
29 Correct 2200 ms 185684 KB Output is correct
30 Correct 2290 ms 195100 KB Output is correct
31 Correct 2251 ms 194936 KB Output is correct
32 Correct 2401 ms 195204 KB Output is correct
33 Correct 1846 ms 171336 KB Output is correct
34 Correct 2285 ms 195128 KB Output is correct
35 Execution timed out 4066 ms 196848 KB Time limit exceeded
36 Halted 0 ms 0 KB -