oj.uz

Submission #224682

# Submission time Handle Problem Language Result Execution time Memory
224682 2020-04-18T15:06:58 Z infinite_iq The Kingdom of JOIOI (JOI17_joioi) C++14
100 / 100
 2868 ms 70940 KB 
#define fast ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0)
#include <bits/stdc++.h>
using namespace std;
#define sqr 547
#define mid (l+r)/2
#define pb push_back
#define ppb pop_back
#define fi first
#define se second
#define lb lower_bound
#define ub upper_bound
#define ins insert
#define era erase
#define C continue
#define mem(dp,i) memset(dp,i,sizeof(dp))
#define mset multiset
#define all(x) x.begin(), x.end()
typedef long long ll;
typedef short int si;
typedef long double ld;
typedef pair<int,int> pi;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pi> vpi;
typedef vector<pll> vpll;
const ll inf=1e18;
const ll mod=1e9+7;
const ld pai=acos(-1);
int n , m , I , J ;
pair < int , pi > MX ;
int a [2009][2009] , done [2009][2009] ;
int yes ( int x ) {
        int mn = 1e9 , mx = -1e9 ;
        for ( int i = 0 ; i < n ; i ++ ) {
                for ( int j = 0 ; j < m ; j ++ ) {
                        if ( done [i][j] ) C ;
                        mn = min ( mn , a [i][j] ) ;
                        mx = max ( mx , a [i][j] ) ;
                }
        }
        return ( mx - mn <= x ) ;
}
int check1 ( int x ) {
        mem ( done , 0 ) ;
        int last = 1e9 , mx = MX.fi , mn = 1e9 ;
        for ( int i = 0 ; i < n ; i ++ ) {
                int crnt = 0 ;
                for ( int j = 0 ; j < m ; j ++ ) {
                        if ( crnt == last ) break ;
                        int MN  = min ( mn , a [i][j] ) ;
                        if ( mx - MN > x ) {
                                last = crnt ;
                                break ;
                        }
                        mn = MN ;
                        crnt ++ ;
                        done [i][j] = 1 ;
                }
                if ( i == I ) {
                        if ( crnt < J+1 ) return 0 ;
                }
        }
        return yes ( x ) ;
}
int check2 ( int x ) {
        mem ( done , 0 ) ;
        int last = 1e9 , mx = MX.fi , mn = 1e9 ;
        for ( int i = n-1 ; i >=0 ; i -- ) {
                int crnt = 0 ;
                for ( int j = 0 ; j < m ; j ++ ) {
                        if ( crnt == last ) break ;
                        int MN = min ( mn , a [i][j] ) ;
                        if ( mx - MN > x ) {
                                last = crnt ;
                                break ;
                        }
                        mn = MN ;
                        crnt ++ ;
                        done [i][j] = 1 ;
                }
                if ( i == I ) {
                        if ( crnt < J+1 ) return 0 ;
                }
        }
        return yes ( x ) ;
}
int check3 ( int x ) {
        mem ( done , 0 ) ;
        int last = 1e9 , mx = MX.fi , mn = 1e9 ;
        for ( int i = 0 ; i < n ; i ++ ) {
                int crnt = 0 ;
                for ( int j = m -1 ; j >= 0 ; j -- ) {
                        if ( crnt == last ) break ;
                        int MN = min ( mn , a [i][j] ) ;
                        if ( mx - MN > x ) {
                                last = crnt ;
                                break ;
                        }
                        mn = MN ;
                        crnt ++ ;
                        done [i][j] = 1 ;
                }
                if ( i == I ) {
                        if ( crnt < m - J ) return 0 ;
                }
        }
        return yes ( x )  ;
}
int check4 ( int x ) {
        mem ( done , 0 ) ;
        int last = 1e9 , mx = MX.fi , mn = 1e9 ;
        for ( int i = n-1 ; i >=0 ; i -- ) {
                int crnt = 0 ;
                for ( int j = m -1 ; j >= 0 ; j -- ) {
                        if ( crnt == last ) break ;
                        int MN = min ( mn , a [i][j] ) ;
                        if ( mx - MN > x ) {
                                last = crnt ;
                                break ;
                        }
                        mn = MN ;
                        crnt ++ ;
                        done [i][j] = 1 ;
                }
                if ( i == I ) {
                        if ( crnt < m - J ) return 0 ;
                }
        }
        return yes ( x )  ;
}
int main () {
        cin >> n >> m ;
        for ( int i = 0 ; i < n ; i ++ ) {
                for ( int j = 0 ; j < m ; j ++ ) {
                        cin >> a [i][j] ;
                        MX = max ( MX , { a[i][j] , { i , j } } ) ;
                }
        }
        I = MX.se.fi ;
        J = MX.se.se ;
        int l = -1 , r = 2e9 ;
        while ( r - l > 1 ) {
                if ( check1 ( mid ) || check2 ( mid ) || check3 ( mid ) || check4 ( mid ) ) r = mid ;
                else l = mid ;
        }
        cout << r << endl ;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 88 ms 16128 KB Output is correct
2 Correct 83 ms 16128 KB Output is correct
3 Correct 205 ms 16204 KB Output is correct
4 Correct 221 ms 16128 KB Output is correct
5 Correct 178 ms 16128 KB Output is correct
6 Correct 208 ms 16204 KB Output is correct
7 Correct 208 ms 16128 KB Output is correct
8 Correct 223 ms 16128 KB Output is correct
9 Correct 216 ms 16248 KB Output is correct
10 Correct 230 ms 16128 KB Output is correct
11 Correct 178 ms 16128 KB Output is correct
12 Correct 196 ms 16208 KB Output is correct
13 Correct 242 ms 16248 KB Output is correct
14 Correct 165 ms 16128 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 88 ms 16128 KB Output is correct
2 Correct 83 ms 16128 KB Output is correct
3 Correct 205 ms 16204 KB Output is correct
4 Correct 221 ms 16128 KB Output is correct
5 Correct 178 ms 16128 KB Output is correct
6 Correct 208 ms 16204 KB Output is correct
7 Correct 208 ms 16128 KB Output is correct
8 Correct 223 ms 16128 KB Output is correct
9 Correct 216 ms 16248 KB Output is correct
10 Correct 230 ms 16128 KB Output is correct
11 Correct 178 ms 16128 KB Output is correct
12 Correct 196 ms 16208 KB Output is correct
13 Correct 242 ms 16248 KB Output is correct
14 Correct 165 ms 16128 KB Output is correct
15 Correct 85 ms 16128 KB Output is correct
16 Correct 98 ms 17272 KB Output is correct
17 Correct 160 ms 17528 KB Output is correct
18 Correct 209 ms 17408 KB Output is correct
19 Correct 150 ms 17272 KB Output is correct
20 Correct 161 ms 17340 KB Output is correct
21 Correct 236 ms 17528 KB Output is correct
22 Correct 212 ms 17528 KB Output is correct
23 Correct 204 ms 17664 KB Output is correct
24 Correct 262 ms 17400 KB Output is correct
25 Correct 203 ms 17528 KB Output is correct
26 Correct 248 ms 17656 KB Output is correct
27 Correct 259 ms 17528 KB Output is correct
28 Correct 223 ms 17528 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 88 ms 16128 KB Output is correct
2 Correct 83 ms 16128 KB Output is correct
3 Correct 205 ms 16204 KB Output is correct
4 Correct 221 ms 16128 KB Output is correct
5 Correct 178 ms 16128 KB Output is correct
6 Correct 208 ms 16204 KB Output is correct
7 Correct 208 ms 16128 KB Output is correct
8 Correct 223 ms 16128 KB Output is correct
9 Correct 216 ms 16248 KB Output is correct
10 Correct 230 ms 16128 KB Output is correct
11 Correct 178 ms 16128 KB Output is correct
12 Correct 196 ms 16208 KB Output is correct
13 Correct 242 ms 16248 KB Output is correct
14 Correct 165 ms 16128 KB Output is correct
15 Correct 85 ms 16128 KB Output is correct
16 Correct 98 ms 17272 KB Output is correct
17 Correct 160 ms 17528 KB Output is correct
18 Correct 209 ms 17408 KB Output is correct
19 Correct 150 ms 17272 KB Output is correct
20 Correct 161 ms 17340 KB Output is correct
21 Correct 236 ms 17528 KB Output is correct
22 Correct 212 ms 17528 KB Output is correct
23 Correct 204 ms 17664 KB Output is correct
24 Correct 262 ms 17400 KB Output is correct
25 Correct 203 ms 17528 KB Output is correct
26 Correct 248 ms 17656 KB Output is correct
27 Correct 259 ms 17528 KB Output is correct
28 Correct 223 ms 17528 KB Output is correct
29 Correct 1991 ms 53396 KB Output is correct
30 Correct 1839 ms 53380 KB Output is correct
31 Correct 2024 ms 55160 KB Output is correct
32 Correct 1998 ms 55060 KB Output is correct
33 Correct 1766 ms 50280 KB Output is correct
34 Correct 1990 ms 55108 KB Output is correct
35 Correct 2868 ms 70848 KB Output is correct
36 Correct 2538 ms 65656 KB Output is correct
37 Correct 2796 ms 70940 KB Output is correct