oj.uz

답안 #636117

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
636117 2022-08-28T07:44:52 Z Bruteforceman The Kingdom of JOIOI (JOI17_joioi) C++11
60 / 100
 4000 ms 243096 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

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 0 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 0 ms 468 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 0 ms 468 KB Output is correct
14 Correct 0 ms 468 KB Output is correct

Subtask #2
45.0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 0 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 0 ms 468 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 0 ms 468 KB Output is correct
14 Correct 0 ms 468 KB Output is correct
15 Correct 1 ms 724 KB Output is correct
16 Correct 6 ms 6868 KB Output is correct
17 Correct 20 ms 9508 KB Output is correct
18 Correct 19 ms 9496 KB Output is correct
19 Correct 19 ms 9552 KB Output is correct
20 Correct 15 ms 8448 KB Output is correct
21 Correct 19 ms 9660 KB Output is correct
22 Correct 22 ms 9572 KB Output is correct
23 Correct 21 ms 9728 KB Output is correct
24 Correct 15 ms 8620 KB Output is correct
25 Correct 18 ms 9724 KB Output is correct
26 Correct 18 ms 9684 KB Output is correct
27 Correct 18 ms 9736 KB Output is correct
28 Correct 18 ms 9708 KB Output is correct

Subtask #3
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 0 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 0 ms 468 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 0 ms 468 KB Output is correct
14 Correct 0 ms 468 KB Output is correct
15 Correct 1 ms 724 KB Output is correct
16 Correct 6 ms 6868 KB Output is correct
17 Correct 20 ms 9508 KB Output is correct
18 Correct 19 ms 9496 KB Output is correct
19 Correct 19 ms 9552 KB Output is correct
20 Correct 15 ms 8448 KB Output is correct
21 Correct 19 ms 9660 KB Output is correct
22 Correct 22 ms 9572 KB Output is correct
23 Correct 21 ms 9728 KB Output is correct
24 Correct 15 ms 8620 KB Output is correct
25 Correct 18 ms 9724 KB Output is correct
26 Correct 18 ms 9684 KB Output is correct
27 Correct 18 ms 9736 KB Output is correct
28 Correct 18 ms 9708 KB Output is correct
29 Correct 1705 ms 206880 KB Output is correct
30 Correct 1746 ms 215780 KB Output is correct
31 Correct 1840 ms 217344 KB Output is correct
32 Correct 1995 ms 217500 KB Output is correct
33 Correct 1572 ms 190556 KB Output is correct
34 Correct 1820 ms 217448 KB Output is correct
35 Execution timed out 4021 ms 243096 KB Time limit exceeded
36 Halted 0 ms 0 KB -