Dynamic-Programming/MaximumBullet(Greedy).cpp at master · robinrst/Dynamic-Programming · GitHub

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#include        "algorithm"
#include        "iostream"
#include        "numeric"
#include        "iomanip"
#include        "cstring"
#include        "math.h"
#include        "bitset"
#include        "string"
#include        "vector"
#include        "ctime"
#include        "queue"
#include        "stack"
#include        "map"
#include        "set"

#include        "ext/pb_ds/assoc_container.hpp" // Common file
#include        "ext/pb_ds/tree_policy.hpp" // Including tree_order_statistics_node_update
#include        "ext/pb_ds/detail/standard_policies.hpp"

using namespace std;
using namespace __gnu_pbds;


#define          f first
#define          lgn 25
#define          endl '\n'
#define          sc second
#define          pb push_back
#define          N (int)2e5+5
#define          PI acos(-1.0)
#define          int long long
#define          vi vector<int>
#define          mod 1000000007
#define          ld long double
#define          eb emplace_back
#define          mii map<int,int>
#define          vpii vector<pii>
#define          pii pair<int,int>
#define          pq priority_queue
#define          BLOCK (int)sqrt(N)
#define          test(x) while(x--)
#define          all(x) begin(x),end(x)
#define          allr(x) x.rbegin(),x.rend()
#define          fo(i,a,n) for(int i=a;i<n;i++)
#define          rfo(i,n,a) for(int i=n;i>=a;i--)
#define          FAST ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define          time() cerr << "Time : " << (double)clock() / (double)CLOCKS_PER_SEC << "s\n"
#define 		 bug(...)       __f (#__VA_ARGS__, __VA_ARGS__)

typedef tree< int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update >
OS ;

template <typename Arg1>
void __f (const char* name, Arg1&& arg1) { cout << name << " : " << arg1 << endl; }
template <typename Arg1, typename... Args>
void __f (const char* names, Arg1&& arg1, Args&&... args)
{
     const char* comma = strchr (names + 1, ',');
     cout.write (names, comma - names) << " : " << arg1 << " | "; __f (comma + 1, args...);
}

const int inf = 0x3f3f3f3f;
const int INF = 0x3f3f3f3f3f3f3f3f;

int n , gg , bb;
pii a[N];

void go()
{
	cin >> n >> gg >> bb;

	fo(i,0,n) cin >> a[i].f;
	fo(i,0,n) cin >> a[i].sc;

	sort( a , a + n , [&]( pii x , pii y) -> bool
	{
		return abs( x.f - x.sc ) > abs( y.f - y.sc );
	});

	int ans = 0;
	int i = 0;

	while( i < n)
	{
		if( a[i].f > a[i].sc and gg )
		{
			ans += a[i].f;
			gg--;
		}
		else if( a[i].f < a[i].sc and bb )
		{
			ans += a[i].sc;
			bb--;
		}
		else if( gg )
		{
			ans += a[i].f , gg--;
		}
		else if( bb )
		{
			ans += a[i].sc , bb--;
		}

		i++;
	}

	cout << ans << endl;
}

int32_t main()
{
	FAST;
	int t=1;
	// cin>>t;
	test(t) go();
}