Submission #496777

#	Time	Username	Problem	Language	Result	Execution time	Memory
496777		vinnipuh01	Maxcomp (info1cup18_maxcomp)	C++17	0 / 100	89 ms	117752 KiB

maxcomp

#include <iostream>
#include <bits/stdc++.h>
#include <cmath>
#include <algorithm>
#include <vector>
#include <deque>
#include <set>
#include <stack>
#include <string>
#include <map>
#include <queue>
#define int long long

using namespace std;

const long long oo = 1000000000000000000;

long long sum, ans = 0, mx = 0, mn = 1000000000, num, pos;


/*
    ViHHiPuh

   (( `'-""``""-'` ))
     )-__-_.._-__-(
   / --- (o _ o) --- \
   \ .-* ( .0. ) *-. /
   _'-. ,_ '=' _, .-'_
  / `;#'#'# - #'#'#;` \
 \_)) -----'#'----- ((_/
      # --------- #
  '# ------- ------ #'
  /..-'# ------- #'-.\
  _\...-\'# -- #'/-.../_
  ((____)- '#' -(____))


    cout << fixed << setprecision(6) << x;

    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    freopen ( "sum.in", "r", stdin )
*/

set<int> dp[ 1001 ][ 1001 ][ 2 ];
int a[ 1001 ][ 1001 ];

int f( int i, int j ) {
	return ( *dp[ i ][ j ][ 1 ].rbegin() - *dp[ i ][ j ][ 1 ].begin() - dp[ i ][ j ][ 1 ].size() );
}

main () {
	int n, m;
	cin >> n >> m;
	for ( int i = 1; i <= n; i ++ ) {
		for ( int j = 1; j <= m; j ++ ) {
			cin >> a[ i ][ j ];
		}
	}
	dp[ 1 ][ 1 ][ 1 ].insert( a[ 1 ][ 1 ] );
	for ( int i = 1; i <= n; i ++ ) {
		for ( int j = 1; j <= m; j ++ ) {
			dp[ i ][ j ][ 1 ].insert( a[ i ][ j ] );
			if ( j > 1 ) {
				dp[ i ][ j - 1 ][ 1 ].insert( a[ i ][ j ] );
				if ( f( i, j - 1 ) > f( i, j ) ) {
					dp[ i ][ j ][ 1 ] = dp[ i ][ j - 1 ][ 1 ];
				}
				dp[ i ][ j - 1 ][ 1 ].erase( a[ i ][ j ] );
			}
			if ( i > 1 ) {
				dp[ i - 1 ][ j ][ 1 ].insert( a[ i ][ j ] );
				if ( f( i - 1, j ) > f( i, j ) )
					dp[ i ][ j ][ 1 ].swap( dp[ i - 1 ][ j ][ 1 ] );
			}
			mx = max( mx, f( i, j ) + 0ll );
		}
	}
	cout << mx << "\n";
}


/*
4
3 3 4

4 ^ 6 ^ 8 ^ 5 ^ 6 ^ 7 = 14

2 3
2 4 3
5 7 5

*/

Compilation message (stderr)

maxcomp.cpp:53:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   53 | main () {
      | ^~~~

• Subtask 1: 0 / 15
• Subtask 2: 0 / 15
• Subtask 3: 0 / 30
• Subtask 4: 0 / 40