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Submission #533970

# Submission time Handle Problem Language Result Execution time Memory
533970 2022-03-07T18:21:19 Z ioi The Kingdom of JOIOI (JOI17_joioi) C++14
60 / 100
 4000 ms 217628 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 ;

        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 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 1 ms 460 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 1 ms 460 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 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 1 ms 460 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 1 ms 460 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 21 ms 9404 KB Output is correct
18 Correct 18 ms 9156 KB Output is correct
19 Correct 17 ms 9280 KB Output is correct
20 Correct 15 ms 8260 KB Output is correct
21 Correct 18 ms 9272 KB Output is correct
22 Correct 22 ms 9180 KB Output is correct
23 Correct 18 ms 9288 KB Output is correct
24 Correct 17 ms 8232 KB Output is correct
25 Correct 19 ms 9288 KB Output is correct
26 Correct 19 ms 9268 KB Output is correct
27 Correct 19 ms 9364 KB Output is correct
28 Correct 19 ms 9324 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 1 ms 460 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 1 ms 460 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 21 ms 9404 KB Output is correct
18 Correct 18 ms 9156 KB Output is correct
19 Correct 17 ms 9280 KB Output is correct
20 Correct 15 ms 8260 KB Output is correct
21 Correct 18 ms 9272 KB Output is correct
22 Correct 22 ms 9180 KB Output is correct
23 Correct 18 ms 9288 KB Output is correct
24 Correct 17 ms 8232 KB Output is correct
25 Correct 19 ms 9288 KB Output is correct
26 Correct 19 ms 9268 KB Output is correct
27 Correct 19 ms 9364 KB Output is correct
28 Correct 19 ms 9324 KB Output is correct
29 Correct 1702 ms 184968 KB Output is correct
30 Correct 1869 ms 194280 KB Output is correct
31 Correct 1910 ms 194076 KB Output is correct
32 Correct 1923 ms 194300 KB Output is correct
33 Correct 1510 ms 170424 KB Output is correct
34 Correct 1914 ms 194228 KB Output is correct
35 Execution timed out 4069 ms 217628 KB Time limit exceeded
36 Halted 0 ms 0 KB -