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Submission #533966

# Submission time Handle Problem Language Result Execution time Memory
533966 2022-03-07T18:15:36 Z ioi The Kingdom of JOIOI (JOI17_joioi) C++14
60 / 100
 4000 ms 218656 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, md ;
        int ans = -1 ;

        if(!(MN[n- 1][c] >= from && MXY[n - 1][c] <= to)){
        while(l <= r){


            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 ;



        while(l <= r){


            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 1 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 460 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 1 ms 460 KB Output is correct
9 Correct 0 ms 460 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 0 ms 460 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 0 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 1 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 460 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 1 ms 460 KB Output is correct
9 Correct 0 ms 460 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 0 ms 460 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 0 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 7 ms 6904 KB Output is correct
17 Correct 19 ms 9240 KB Output is correct
18 Correct 18 ms 9156 KB Output is correct
19 Correct 18 ms 9196 KB Output is correct
20 Correct 19 ms 8268 KB Output is correct
21 Correct 26 ms 9328 KB Output is correct
22 Correct 18 ms 9244 KB Output is correct
23 Correct 18 ms 9288 KB Output is correct
24 Correct 20 ms 8260 KB Output is correct
25 Correct 17 ms 9368 KB Output is correct
26 Correct 18 ms 9288 KB Output is correct
27 Correct 20 ms 9324 KB Output is correct
28 Correct 20 ms 9240 KB Output is correct

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 460 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 1 ms 460 KB Output is correct
9 Correct 0 ms 460 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 0 ms 460 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 0 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 7 ms 6904 KB Output is correct
17 Correct 19 ms 9240 KB Output is correct
18 Correct 18 ms 9156 KB Output is correct
19 Correct 18 ms 9196 KB Output is correct
20 Correct 19 ms 8268 KB Output is correct
21 Correct 26 ms 9328 KB Output is correct
22 Correct 18 ms 9244 KB Output is correct
23 Correct 18 ms 9288 KB Output is correct
24 Correct 20 ms 8260 KB Output is correct
25 Correct 17 ms 9368 KB Output is correct
26 Correct 18 ms 9288 KB Output is correct
27 Correct 20 ms 9324 KB Output is correct
28 Correct 20 ms 9240 KB Output is correct
29 Correct 1855 ms 184872 KB Output is correct
30 Correct 1803 ms 194196 KB Output is correct
31 Correct 1856 ms 194112 KB Output is correct
32 Correct 1933 ms 194204 KB Output is correct
33 Correct 1536 ms 170380 KB Output is correct
34 Correct 1933 ms 194248 KB Output is correct
35 Execution timed out 4078 ms 218656 KB Time limit exceeded
36 Halted 0 ms 0 KB -