oj.uz

Submission #533942

# Submission time Handle Problem Language Result Execution time Memory
533942 2022-03-07T17:08:21 Z ioi The Kingdom of JOIOI (JOI17_joioi) C++14
60 / 100
 4000 ms 185488 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 ,  M = N * 64  , MX = 2e4 + 40;

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 = n - 1, md ;
        int ans = -1 ;


        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 ;


        }
     //  debug(ans)
        en = min(en , ans + 1);
       // 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 ;

    vector<int> v ;

    set<int> st ;

    int mx = 0 , mn = 1e9 ;

    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]);
            mx = max(mx , arr[i][j]) , mn = min(mn , arr[i][j]);

        }
    }


    process();

    for(auto f : st)v.push_back(f);

    int sz = v.size();
    int mnans = mx - mn;
    for(int all = 0 ; all < 2 ; all ++){


        int  l = 0 , r = sz - 1 ,  md ;



        while(l <= r){


            md = (l + r) / 2 ;



            int d = v[md] - v[0];

            if(check(mn , mn + d) || check(mx - d , mx)){
            //    cout << "here" << endl ;
                mnans = min(mnans , d) ,  r = md- 1 ;
            }
            else l = md + 1 ;


        }
      //  debug(mnans)


        l = 0 , r = sz - 1 , md ;


         while(l <= r){


            md = (l + r) / 2 ;




            int d = v.back() - v[md];


            if(check(mn , mn + d) || check(mx - d , mx))
                mnans = min(mnans , d) ,  l = md + 1 ;
            else r = 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 ;

}

Compilation message

joioi.cpp: In function 'int32_t main()':
joioi.cpp:165:33: warning: right operand of comma operator has no effect [-Wunused-value]
  165 |         l = 0 , r = sz - 1 , md ;
      |                                 ^

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 452 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 572 KB Output is correct
4 Correct 1 ms 448 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 576 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 452 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 572 KB Output is correct
4 Correct 1 ms 448 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 576 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 2 ms 588 KB Output is correct
16 Correct 10 ms 5980 KB Output is correct
17 Correct 21 ms 8568 KB Output is correct
18 Correct 17 ms 8524 KB Output is correct
19 Correct 20 ms 8560 KB Output is correct
20 Correct 16 ms 7628 KB Output is correct
21 Correct 23 ms 8744 KB Output is correct
22 Correct 18 ms 8644 KB Output is correct
23 Correct 19 ms 8640 KB Output is correct
24 Correct 22 ms 7876 KB Output is correct
25 Correct 21 ms 8632 KB Output is correct
26 Correct 24 ms 8648 KB Output is correct
27 Correct 26 ms 8668 KB Output is correct
28 Correct 18 ms 8648 KB Output is correct

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 452 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 572 KB Output is correct
4 Correct 1 ms 448 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 576 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 2 ms 588 KB Output is correct
16 Correct 10 ms 5980 KB Output is correct
17 Correct 21 ms 8568 KB Output is correct
18 Correct 17 ms 8524 KB Output is correct
19 Correct 20 ms 8560 KB Output is correct
20 Correct 16 ms 7628 KB Output is correct
21 Correct 23 ms 8744 KB Output is correct
22 Correct 18 ms 8644 KB Output is correct
23 Correct 19 ms 8640 KB Output is correct
24 Correct 22 ms 7876 KB Output is correct
25 Correct 21 ms 8632 KB Output is correct
26 Correct 24 ms 8648 KB Output is correct
27 Correct 26 ms 8668 KB Output is correct
28 Correct 18 ms 8648 KB Output is correct
29 Correct 1844 ms 95432 KB Output is correct
30 Correct 1918 ms 100136 KB Output is correct
31 Correct 1887 ms 99992 KB Output is correct
32 Correct 1930 ms 100076 KB Output is correct
33 Correct 1515 ms 87960 KB Output is correct
34 Correct 1825 ms 100300 KB Output is correct
35 Execution timed out 4051 ms 185488 KB Time limit exceeded
36 Halted 0 ms 0 KB -