Submission #159304

#	Time	Username	Problem	Language	Result	Execution time	Memory
159304		AKaan37	Art Exhibition (JOI18_art)	C++17	50 / 100	901 ms	204972 KiB

art

//Sani buyuk Osman Pasa Plevneden cikmam diyor.
//FatihSultanMehmedHan
//Abdulhamid Han
//Bismillahirrahmanirrahim
//█▀█─█──█──█▀█─█─█
//█▄█─█──█──█▄█─█▄█
//█─█─█▄─█▄─█─█─█─█
 

#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")

#include <bits/stdc++.h>

using namespace std;

typedef long long lo;
typedef pair< lo,lo > PII;

#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define int long long
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(int i=1;i<=n;i++)
#define mid ((start+end)/2)
#define ort ((bas+son)/2)

const lo MAX = -1000000000000000000;
const lo MIN = 1000000000000000000;
const lo inf = 1000000000000000000;
const lo KOK = 100000;
const lo LOG = 30;
const lo li = 500005;
const lo mod = 1000000007;

int n,m,b[li],a[li],k,flag,t,dp[5002][5002];
int cev;
string s;
PII p[li];
vector<int> v;

inline int f(int sira,int son){
	int cevv=-inf;
	if(sira>n){
		if(son==0)return -inf;
		return p[son].fi;
	}
	if(sira==n){
		return p[sira].se-p[sira].fi+p[son].fi;
	}
	if(~dp[sira][son])return dp[sira][son];
	if(son==0){
		cevv=max(cevv,f(sira+1,0));
		cevv=max(cevv,f(sira+1,sira)+p[sira].se);
		cevv=max(cevv,f(n+1,sira)+p[sira].se-p[sira].fi);
	}
	else{
		cevv=max(cevv,f(sira+1,son)+p[sira].se);
		cevv=max(cevv,f(n+1,son)+p[sira].se-p[sira].fi);
		cevv=max(cevv,f(sira+1,son));
	}
	return dp[sira][son]=cevv;
}

main(void){
	memset(dp,-1,sizeof(dp));
	scanf("%lld",&n);
	FOR{
		scanf("%lld %lld",&p[i].fi,&p[i].se);
	}
	sort(p+1,p+n+1);
	printf("%lld\n",f(1,0));
	return 0;
}

Compilation message (stderr)

art.cpp:67:10: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(void){
          ^
art.cpp: In function 'int main()':
art.cpp:69:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld",&n);
  ~~~~~^~~~~~~~~~~
art.cpp:71:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld %lld",&p[i].fi,&p[i].se);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 0 / 50