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답안 #224547

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
224547 2020-04-18T11:35:25 Z maximath_1 Feast (NOI19_feast) C++17
100 / 100
 195 ms 13944 KB 
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define gc getchar
#define pc putchar
int in(){
	char c=gc(); bool neg=false;
	for(; c<'0'||'9'<c; c=gc())
		if(c=='-') neg=true;
	int rs=c-'0'; c=gc();
	for(; '0'<=c && c<='9'; c=gc())
		rs=(rs<<1)+(rs<<3)+(c-'0');
	if(neg) rs=-rs;
	return rs;
}
void out(ll _n){
	ll N=_n, rev, count=0;
	rev=N;
	if(N==0) {pc('0'); return;}
	while((rev%10ll)==0) {count++; rev/=10;}
	rev=0;
	while(N!=0) {rev=(rev<<3ll)+(rev<<1ll)+N%10; N/=10;}
	while(rev!=0) {pc(rev%10ll+'0'); rev/=10;}
	while(count--) pc('0');
}
int n, k, val[300005];
pair<ll, int> dp[300005][2];
pair<ll, int> solve(ll x){
	for(int i=1; i<=n; i++){
		if(dp[i-1][0].first>dp[i-1][1].first-x)
			dp[i][0]=dp[i-1][0];
		else if(dp[i-1][0].first<dp[i-1][1].first-x)
			dp[i][0]={dp[i-1][1].first-x, dp[i-1][1].second+1};
		else if(dp[i-1][0].second<dp[i-1][1].second+1)
			dp[i][0]=dp[i-1][0];
		else dp[i][0]={dp[i-1][1].first-x, dp[i-1][1].second+1};

		if(dp[i-1][0].first>dp[i-1][1].first)
			dp[i][1]=dp[i-1][0];
		else if(dp[i-1][0].first<dp[i-1][1].first)
			dp[i][1]=dp[i-1][1];
		else if(dp[i-1][0].second<dp[i-1][1].second)
			dp[i][1]=dp[i-1][0];
		else dp[i][1]=dp[i-1][1];
		dp[i][1]={dp[i][1].first+val[i], dp[i][1].second};
	}
	pair<ll, int> ans;
	if(dp[n][0].first>dp[n][1].first-x)
		ans=dp[n][0];
	else if(dp[n][0].first<dp[n][1].first-x)
		ans={dp[n][1].first-x, dp[n][1].second+1};
	else if(dp[n][0].second<dp[n][1].second+1)
		ans=dp[n][0];
	else ans={dp[n][1].first-x, dp[n][1].second+1};
	return ans;
}
int main(){
	n=in(), k=in();
	for(int i=1; i<=n; i++) val[i]=in();
	ll l=0, r=3e14, md;
	while(l<=r){
		md=(l+r)/2;
//		cout<<md<<" "<<solve(md).first<<" "<<solve(md).second<<endl;
		if(solve(md).second>k) l=md+1;
		else r=md-1;
	}
//	cout<<l<<endl;
	ll ans=solve(l).first+l*(ll)k;
	out(ans); pc('\n'); return 0;
}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 128 ms 10488 KB Output is correct
2 Correct 131 ms 10872 KB Output is correct
3 Correct 132 ms 11000 KB Output is correct
4 Correct 133 ms 11012 KB Output is correct
5 Correct 131 ms 10872 KB Output is correct
6 Correct 129 ms 10616 KB Output is correct
7 Correct 128 ms 10616 KB Output is correct
8 Correct 130 ms 10872 KB Output is correct
9 Correct 129 ms 10616 KB Output is correct
10 Correct 132 ms 10744 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 109 ms 10744 KB Output is correct
2 Correct 113 ms 11004 KB Output is correct
3 Correct 108 ms 10752 KB Output is correct
4 Correct 110 ms 10752 KB Output is correct
5 Correct 128 ms 10616 KB Output is correct
6 Correct 111 ms 10748 KB Output is correct
7 Correct 113 ms 11104 KB Output is correct
8 Correct 133 ms 10880 KB Output is correct
9 Correct 129 ms 10680 KB Output is correct
10 Correct 110 ms 10752 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 152 ms 10940 KB Output is correct
2 Correct 147 ms 10872 KB Output is correct
3 Correct 148 ms 11000 KB Output is correct
4 Correct 146 ms 10872 KB Output is correct
5 Correct 150 ms 11128 KB Output is correct
6 Correct 150 ms 11076 KB Output is correct
7 Correct 157 ms 11128 KB Output is correct
8 Correct 146 ms 11000 KB Output is correct
9 Correct 152 ms 11128 KB Output is correct
10 Correct 149 ms 11128 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 5 ms 512 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 4 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct

Subtask #5
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 5 ms 512 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 4 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 4 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 4 ms 384 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 5 ms 512 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 4 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 4 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 4 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 6 ms 384 KB Output is correct
23 Correct 6 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 6 ms 384 KB Output is correct
27 Correct 6 ms 384 KB Output is correct
28 Correct 6 ms 384 KB Output is correct
29 Correct 5 ms 384 KB Output is correct
30 Correct 5 ms 384 KB Output is correct

Subtask #7
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 128 ms 10488 KB Output is correct
2 Correct 131 ms 10872 KB Output is correct
3 Correct 132 ms 11000 KB Output is correct
4 Correct 133 ms 11012 KB Output is correct
5 Correct 131 ms 10872 KB Output is correct
6 Correct 129 ms 10616 KB Output is correct
7 Correct 128 ms 10616 KB Output is correct
8 Correct 130 ms 10872 KB Output is correct
9 Correct 129 ms 10616 KB Output is correct
10 Correct 132 ms 10744 KB Output is correct
11 Correct 109 ms 10744 KB Output is correct
12 Correct 113 ms 11004 KB Output is correct
13 Correct 108 ms 10752 KB Output is correct
14 Correct 110 ms 10752 KB Output is correct
15 Correct 128 ms 10616 KB Output is correct
16 Correct 111 ms 10748 KB Output is correct
17 Correct 113 ms 11104 KB Output is correct
18 Correct 133 ms 10880 KB Output is correct
19 Correct 129 ms 10680 KB Output is correct
20 Correct 110 ms 10752 KB Output is correct
21 Correct 152 ms 10940 KB Output is correct
22 Correct 147 ms 10872 KB Output is correct
23 Correct 148 ms 11000 KB Output is correct
24 Correct 146 ms 10872 KB Output is correct
25 Correct 150 ms 11128 KB Output is correct
26 Correct 150 ms 11076 KB Output is correct
27 Correct 157 ms 11128 KB Output is correct
28 Correct 146 ms 11000 KB Output is correct
29 Correct 152 ms 11128 KB Output is correct
30 Correct 149 ms 11128 KB Output is correct
31 Correct 5 ms 384 KB Output is correct
32 Correct 4 ms 384 KB Output is correct
33 Correct 4 ms 384 KB Output is correct
34 Correct 4 ms 384 KB Output is correct
35 Correct 4 ms 384 KB Output is correct
36 Correct 4 ms 384 KB Output is correct
37 Correct 5 ms 512 KB Output is correct
38 Correct 5 ms 384 KB Output is correct
39 Correct 4 ms 384 KB Output is correct
40 Correct 4 ms 384 KB Output is correct
41 Correct 5 ms 384 KB Output is correct
42 Correct 5 ms 384 KB Output is correct
43 Correct 5 ms 384 KB Output is correct
44 Correct 4 ms 384 KB Output is correct
45 Correct 5 ms 384 KB Output is correct
46 Correct 5 ms 384 KB Output is correct
47 Correct 5 ms 384 KB Output is correct
48 Correct 5 ms 384 KB Output is correct
49 Correct 5 ms 384 KB Output is correct
50 Correct 4 ms 384 KB Output is correct
51 Correct 5 ms 384 KB Output is correct
52 Correct 6 ms 384 KB Output is correct
53 Correct 6 ms 384 KB Output is correct
54 Correct 5 ms 384 KB Output is correct
55 Correct 5 ms 384 KB Output is correct
56 Correct 6 ms 384 KB Output is correct
57 Correct 6 ms 384 KB Output is correct
58 Correct 6 ms 384 KB Output is correct
59 Correct 5 ms 384 KB Output is correct
60 Correct 5 ms 384 KB Output is correct
61 Correct 179 ms 10876 KB Output is correct
62 Correct 183 ms 13944 KB Output is correct
63 Correct 161 ms 13560 KB Output is correct
64 Correct 187 ms 13944 KB Output is correct
65 Correct 195 ms 13816 KB Output is correct
66 Correct 187 ms 13816 KB Output is correct
67 Correct 190 ms 13816 KB Output is correct
68 Correct 155 ms 13816 KB Output is correct
69 Correct 148 ms 13560 KB Output is correct
70 Correct 148 ms 13496 KB Output is correct