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답안 #238525

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
238525 2020-06-11T16:00:31 Z Pbezz Feast (NOI19_feast) C++14
30 / 100
 1000 ms 8824 KB 
#include <bits/stdc++.h>
using namespace std;

#define loop(i,n) for (ll i = 0; i < n; i++)

#define ll long long
#define INF 1e9+5
#define MAXN 300007
#define pb push_back 
#define mp make_pair
typedef pair<ll,ll> pii;

ll n,k;
vector<ll>dp(MAXN);//de 1 a n

ll siga(ll pos, ll left){
//retornar o best que posso fazer
//usei até pos-1

	if(pos==n+1)return 0;
	if(left==0)return 0;

	ll i,ret=0,k,gains;

	k=siga(pos+1,left);
	ret=max(ret,k);

	for(i=pos+1;i<=n;i++){//usar até i

	gains=dp[i]-dp[pos-1];

	k = siga(i+1,left-1)+gains;

	ret=max(ret,k);

	k = siga(i+1,left);
	ret=max(ret,k);


}

	return ret;

}


int main(){

	ll i,ans,count=0,mini,x;
	cin>>n>>k;

	vector<ll>a(n+1);

	for(i=1;i<=n;i++){
	cin>>a[i];

	if(a[i]<0){count++; mini=i;}

	dp[i]=dp[i-1]+a[i];

}

	if(count==0){
	ans=dp[n];
	}else if(count==1){

	if(k>=2)ans=dp[n]-a[mini];
	else{
	x=dp[n]-dp[mini];
	ans=max(dp[n], max(dp[mini-1], x));
	}

	}else if(k==1){//clássico maximum sum subarray

	ans=0;
	vector<ll>bruh(n+1);

	for(i=1;i<=n;i++){

	bruh[i]=max(bruh[i-1],(ll int)0)+a[i];
	ans=max(ans,bruh[i]);
}

	}else{//bruteforce básico

	ans=siga(1,k);

}

	printf("%lld\n",ans);

return 0;
}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 177 ms 6520 KB Output is correct
2 Correct 180 ms 6468 KB Output is correct
3 Correct 182 ms 6472 KB Output is correct
4 Correct 182 ms 6520 KB Output is correct
5 Correct 181 ms 6440 KB Output is correct
6 Correct 180 ms 6520 KB Output is correct
7 Correct 180 ms 6404 KB Output is correct
8 Correct 184 ms 6520 KB Output is correct
9 Correct 178 ms 6392 KB Output is correct
10 Correct 185 ms 6648 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 100 ms 6136 KB Output is correct
2 Correct 97 ms 6264 KB Output is correct
3 Correct 95 ms 6208 KB Output is correct
4 Correct 97 ms 6136 KB Output is correct
5 Correct 178 ms 6392 KB Output is correct
6 Correct 99 ms 6008 KB Output is correct
7 Correct 100 ms 6136 KB Output is correct
8 Correct 182 ms 6536 KB Output is correct
9 Correct 176 ms 6392 KB Output is correct
10 Correct 102 ms 6264 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 197 ms 8696 KB Output is correct
2 Correct 196 ms 8628 KB Output is correct
3 Correct 197 ms 8824 KB Output is correct
4 Correct 192 ms 8696 KB Output is correct
5 Correct 194 ms 8696 KB Output is correct
6 Correct 197 ms 8696 KB Output is correct
7 Correct 198 ms 8696 KB Output is correct
8 Correct 196 ms 8824 KB Output is correct
9 Correct 197 ms 8696 KB Output is correct
10 Correct 195 ms 8824 KB Output is correct

Subtask #4
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 2688 KB Output is correct
2 Execution timed out 1090 ms 2688 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 2688 KB Output is correct
2 Execution timed out 1090 ms 2688 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 2688 KB Output is correct
2 Execution timed out 1090 ms 2688 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #7
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 177 ms 6520 KB Output is correct
2 Correct 180 ms 6468 KB Output is correct
3 Correct 182 ms 6472 KB Output is correct
4 Correct 182 ms 6520 KB Output is correct
5 Correct 181 ms 6440 KB Output is correct
6 Correct 180 ms 6520 KB Output is correct
7 Correct 180 ms 6404 KB Output is correct
8 Correct 184 ms 6520 KB Output is correct
9 Correct 178 ms 6392 KB Output is correct
10 Correct 185 ms 6648 KB Output is correct
11 Correct 100 ms 6136 KB Output is correct
12 Correct 97 ms 6264 KB Output is correct
13 Correct 95 ms 6208 KB Output is correct
14 Correct 97 ms 6136 KB Output is correct
15 Correct 178 ms 6392 KB Output is correct
16 Correct 99 ms 6008 KB Output is correct
17 Correct 100 ms 6136 KB Output is correct
18 Correct 182 ms 6536 KB Output is correct
19 Correct 176 ms 6392 KB Output is correct
20 Correct 102 ms 6264 KB Output is correct
21 Correct 197 ms 8696 KB Output is correct
22 Correct 196 ms 8628 KB Output is correct
23 Correct 197 ms 8824 KB Output is correct
24 Correct 192 ms 8696 KB Output is correct
25 Correct 194 ms 8696 KB Output is correct
26 Correct 197 ms 8696 KB Output is correct
27 Correct 198 ms 8696 KB Output is correct
28 Correct 196 ms 8824 KB Output is correct
29 Correct 197 ms 8696 KB Output is correct
30 Correct 195 ms 8824 KB Output is correct
31 Correct 6 ms 2688 KB Output is correct
32 Execution timed out 1090 ms 2688 KB Time limit exceeded
33 Halted 0 ms 0 KB -