CF255--D-priority queue

This is indeed a good question ~ At that time, I only thought we should do it with greed...

Later, I was told that the relationship between greedy local and global optimal solutions should not be strictly established ~

Touch me

There is always a solution to this problem.

 

 1 #include <iostream> 2 #include <cstdio> 3 #include <queue> 4 using namespace std; 5  6 typedef long long LL; 7 const int size = 1000010; 8 const LL inf = 1e18; 9 LL a[1010] , b[1010];10 LL row[size] , col[size];11 priority_queue<LL>rowQu,colQu;12 13 int main()14 {15     cin.sync_with_stdio(false);16     LL n , m , k , p , i , j , num , ans , temp;17     while( cin >> n >> m >> k >> p )18     {19         for( i = 1 ; i<=n ; i++ )20         {21             for( j = 1 ; j<=m ; j++ )22             {23                 cin >> num;24                 a[i] += num;25                 b[j] += num;26             }27             rowQu.push(a[i]); 28         }29         for( j = 1 ; j<=m ; j++ )30         {31             colQu.push(b[j]);32         }33         ans = -inf;34         for( i = 1 ; i<=k ; i++ )35         {36             temp = rowQu.top();37             rowQu.pop();38             row[i] = row[i-1] + temp;39             rowQu.push(temp-m*p);40             41             temp =  colQu.top();42             colQu.pop();43             col[i] = col[i-1] + temp;44             colQu.push(temp-n*p);45         }46         for( i = 0 ; i<=k ; i++ )47         {48             temp = row[i] + col[k-i];49             temp -= (i)*(k-i)*p;50             if( temp>ans )51                 ans = temp;52         }53         cout << ans << endl;54     }55     return 0;    56 }

View code

Here, because the data is very big and 64-bit, ANS should be set small enough... at the beginning, I will use my usual 0x3f3f3f3f To wa ~

In the future, I will do a good job in every CF scenario. In the future, I will post the CF post, but I will only learn it when I come to see other people's problem-solving reports ~

// I woke up until half past two P.M. today. The World Cup is over.

 

Today:

This is a world that is popular, but we are not good at saying goodbye ~

You have finally lived like a general human behavior specification, removing your expression and hiding your emotions without a trace of popularity ~