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답안 #203542

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
203542 2020-02-21T07:34:23 Z blacktulip Semiexpress (JOI17_semiexpress) C++17
48 / 100
 128 ms 143608 KB 
#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 = 100000000000000000;
const lo KOK = 100000;
const lo LOG = 30;
const lo li = 500005;
const lo mod = 1000000007;
 
int n,m,b,c,a,k,flag,t,vis[li],dp[3005][3005];
int cev,ans;
string s;
set<int> st,st1;
vector<int> v;

inline int f(int sira,int kac){
	//~ cout<<sira<<" : : "<<kac<<endl;
	int cevv=-inf;
	if(kac<0)return -inf;
	if(sira>n){
		//~ if(kac!=0)return -inf;
		return 0;
	}
	if(~dp[sira][kac])return dp[sira][kac];
	if(vis[sira]){
		//~ cout<<"**\n";
		int bas=sira;
		int son=0;
		if(vis[sira]<(int)v.size())
			son=v[vis[sira]]-1;
		else son=n;
		while(bas<=son){
			if((sira-1)*b+(ort-sira)*a>t)son=ort-1;
			else bas=ort+1;
		}
		
		//~ cout<<"***\n";
		if(son<sira){
			cevv=max(cevv,f(n+1,kac));
			//~ cevv=max(cevv,f(sira+1,kac-1));
		}
		else{
			cevv=max(cevv,f(son+1,kac)+son-sira+1);
		}
		
	}
	else{
		//~ cout<<"()\n";
		cevv=max(cevv,f(sira+1,kac));
		auto it1=st.upper_bound(sira);
		auto it=it1;
		//~ if(it==st.begin())cout<<"one\n";
		it--;
		int bas=sira;
		int son=0;
		if(it1!=st.end())
			son=*it1-1;
		else son=n-1;
		//~ if(sira==5)cout<<son<<"yess"<<*it1<<endl;
		while(bas<=son){
			//~ if(sira==8){
				//~ cout<<bas<<" ()() "<<son<<" ()() "<<ort<<" ()() "<<(*it-1)*b+(sira-*it)*c+(ort-sira)*a<<"DEBUG"<<endl;
			//~ }
			if((*it-1)*b+(sira-*it)*c+(ort-sira)*a>t)son=ort-1;
			else bas=ort+1;
		}
		//~ cout<<sira<<" : : "<<son<<endl;
		if(son<sira)cevv=max(cevv,f(sira+1,kac));
		//~ if(son<sira)cevv=max(cevv,f(sira+1,kac));
		else cevv=max(cevv,f(son+1,kac-1)+son-sira+1);
		
	}
	return dp[sira][kac]=cevv;
}

main(void){
	memset(dp,-1,sizeof(dp));
	scanf("%lld %lld %lld",&n,&m,&k);
	scanf("%lld %lld %lld",&a,&b,&c);
	scanf("%lld",&t);
	for(int i=1;i<=m;i++){
		int x;
		scanf("%lld",&x);
		vis[x]=i;
		v.pb(x);
		st.insert(x);
		k--;
	}
	cev=f(1,k);
	printf("%lld\n",--cev);
	return 0;
}

Compilation message

semiexpress.cpp:92:10: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(void){
          ^
semiexpress.cpp: In function 'int main()':
semiexpress.cpp:94:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld %lld %lld",&n,&m,&k);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
semiexpress.cpp:95:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld %lld %lld",&a,&b,&c);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
semiexpress.cpp:96:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld",&t);
  ~~~~~^~~~~~~~~~~
semiexpress.cpp:99:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld",&x);
   ~~~~~^~~~~~~~~~~

Subtask #1
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 45 ms 71036 KB Output is correct
2 Correct 42 ms 71032 KB Output is correct
3 Correct 42 ms 71032 KB Output is correct
4 Correct 45 ms 71160 KB Output is correct
5 Correct 43 ms 71032 KB Output is correct
6 Correct 43 ms 71032 KB Output is correct
7 Correct 42 ms 71032 KB Output is correct
8 Correct 41 ms 71032 KB Output is correct

Subtask #2
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 45 ms 71036 KB Output is correct
2 Correct 42 ms 71032 KB Output is correct
3 Correct 42 ms 71032 KB Output is correct
4 Correct 45 ms 71160 KB Output is correct
5 Correct 43 ms 71032 KB Output is correct
6 Correct 43 ms 71032 KB Output is correct
7 Correct 42 ms 71032 KB Output is correct
8 Correct 41 ms 71032 KB Output is correct
9 Correct 43 ms 71032 KB Output is correct
10 Correct 42 ms 71048 KB Output is correct
11 Correct 43 ms 71032 KB Output is correct
12 Correct 42 ms 71032 KB Output is correct
13 Correct 43 ms 71032 KB Output is correct
14 Correct 43 ms 71032 KB Output is correct
15 Correct 44 ms 71032 KB Output is correct
16 Correct 43 ms 71032 KB Output is correct
17 Correct 44 ms 71032 KB Output is correct
18 Correct 43 ms 71032 KB Output is correct

Subtask #3
0 / 52.0

# 결과 실행 시간 메모리 Grader output
1 Correct 45 ms 71036 KB Output is correct
2 Correct 42 ms 71032 KB Output is correct
3 Correct 42 ms 71032 KB Output is correct
4 Correct 45 ms 71160 KB Output is correct
5 Correct 43 ms 71032 KB Output is correct
6 Correct 43 ms 71032 KB Output is correct
7 Correct 42 ms 71032 KB Output is correct
8 Correct 41 ms 71032 KB Output is correct
9 Correct 43 ms 71032 KB Output is correct
10 Correct 42 ms 71048 KB Output is correct
11 Correct 43 ms 71032 KB Output is correct
12 Correct 42 ms 71032 KB Output is correct
13 Correct 43 ms 71032 KB Output is correct
14 Correct 43 ms 71032 KB Output is correct
15 Correct 44 ms 71032 KB Output is correct
16 Correct 43 ms 71032 KB Output is correct
17 Correct 44 ms 71032 KB Output is correct
18 Correct 43 ms 71032 KB Output is correct
19 Runtime error 128 ms 143608 KB Execution killed with signal 11 (could be triggered by violating memory limits)
20 Halted 0 ms 0 KB -