oj.uz

답안 #102679

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
102679 2019-03-26T17:52:13 Z ihdignite Cake 3 (JOI19_cake3) C++14
100 / 100
 1014 ms 10592 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long

const int mxN=2e5;
int n, m, p[mxN];
array<ll, 2> a[mxN], q[mxN], ft[mxN+1];
ll ans=-1e18;

array<ll, 2> operator+(array<ll, 2> a, array<ll, 2> b) {
	return {a[0]+b[0], a[1]+b[1]};
}

void upd(int i, array<ll, 2> x) {
	for(++i; i<=n; i+=i&-i)
		ft[i]=ft[i]+x;
}

ll sk(int k) {
	array<ll, 2> r{};
	for(int i=17, x=0; ~i; --i) {
		if(x+(1<<i)<=n&&(r+ft[x+(1<<i)])[1]<=k) {
			x+=1<<i;
			r=r+ft[x];
		}
	}
	return r[0];
}

void dc(int l1=0, int r1=n-m, int l2=0, int r2=n-1) {
	if(l1>r1) {
		for(int i=l2; i<=r2; ++i)
			upd(p[i], {a[i][1], 1});
		return;
	}
	int m1=(l1+r1)/2, m2;
	for(int i=l1; i<m1; ++i)
		upd(p[i], {-a[i][1], -1});
	ll ca=-1e18;
	for(int i=l2; i<=r2; ++i) {
		upd(p[i], {a[i][1], 1});
		if(i-m1+1<m)
			continue;
		ll da=sk(m)-2*a[i][0];
		if(da>ca) {
			m2=i;
			ca=da;
		}
	}
	ans=max(ca+2*a[m1][0], ans);
	for(int i=l1; i<m1; ++i)
		upd(p[i], {a[i][1], 1});
	for(int i=l2; i<=r2; ++i)
		upd(p[i], {-a[i][1], -1});
	dc(l1, m1-1, l2, m2);
	upd(p[m1], {-a[m1][1], -1});
	upd(p[m2], {-a[m2][1], -1});
	dc(m1+1, r1, m2, r2);
}

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);

	cin >> n >> m;
	for(int i=0; i<n; ++i)
		cin >> a[i][1] >> a[i][0];
	sort(a, a+n);
	for(int i=0; i<n; ++i)
		q[i]={-a[i][1], i};
	sort(q, q+n);
	for(int i=0; i<n; ++i)
		p[q[i][1]]=i;
	dc();
	cout << ans;
}

Compilation message

cake3.cpp: In function 'void dc(int, int, int, int)':
cake3.cpp:58:5: warning: 'm2' may be used uninitialized in this function [-Wmaybe-uninitialized]
  upd(p[m2], {-a[m2][1], -1});
  ~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 3 ms 384 KB Output is correct
18 Correct 3 ms 384 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 3 ms 384 KB Output is correct
23 Correct 2 ms 384 KB Output is correct
24 Correct 2 ms 384 KB Output is correct
25 Correct 2 ms 384 KB Output is correct
26 Correct 2 ms 384 KB Output is correct
27 Correct 2 ms 384 KB Output is correct
28 Correct 2 ms 384 KB Output is correct
29 Correct 3 ms 384 KB Output is correct
30 Correct 2 ms 384 KB Output is correct
31 Correct 2 ms 384 KB Output is correct
32 Correct 3 ms 384 KB Output is correct
33 Correct 2 ms 384 KB Output is correct
34 Correct 2 ms 384 KB Output is correct
35 Correct 2 ms 384 KB Output is correct
36 Correct 2 ms 384 KB Output is correct
37 Correct 2 ms 384 KB Output is correct

Subtask #2
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 3 ms 384 KB Output is correct
18 Correct 3 ms 384 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 3 ms 384 KB Output is correct
23 Correct 2 ms 384 KB Output is correct
24 Correct 2 ms 384 KB Output is correct
25 Correct 2 ms 384 KB Output is correct
26 Correct 2 ms 384 KB Output is correct
27 Correct 2 ms 384 KB Output is correct
28 Correct 2 ms 384 KB Output is correct
29 Correct 3 ms 384 KB Output is correct
30 Correct 2 ms 384 KB Output is correct
31 Correct 2 ms 384 KB Output is correct
32 Correct 3 ms 384 KB Output is correct
33 Correct 2 ms 384 KB Output is correct
34 Correct 2 ms 384 KB Output is correct
35 Correct 2 ms 384 KB Output is correct
36 Correct 2 ms 384 KB Output is correct
37 Correct 2 ms 384 KB Output is correct
38 Correct 6 ms 512 KB Output is correct
39 Correct 5 ms 512 KB Output is correct
40 Correct 4 ms 512 KB Output is correct
41 Correct 4 ms 512 KB Output is correct
42 Correct 3 ms 384 KB Output is correct
43 Correct 5 ms 512 KB Output is correct
44 Correct 4 ms 512 KB Output is correct
45 Correct 5 ms 512 KB Output is correct
46 Correct 4 ms 512 KB Output is correct
47 Correct 5 ms 512 KB Output is correct
48 Correct 5 ms 512 KB Output is correct
49 Correct 5 ms 512 KB Output is correct
50 Correct 5 ms 512 KB Output is correct
51 Correct 5 ms 512 KB Output is correct
52 Correct 5 ms 512 KB Output is correct
53 Correct 4 ms 512 KB Output is correct
54 Correct 4 ms 512 KB Output is correct
55 Correct 4 ms 512 KB Output is correct
56 Correct 4 ms 512 KB Output is correct
57 Correct 4 ms 512 KB Output is correct
58 Correct 4 ms 384 KB Output is correct
59 Correct 5 ms 384 KB Output is correct
60 Correct 5 ms 512 KB Output is correct
61 Correct 4 ms 384 KB Output is correct
62 Correct 4 ms 512 KB Output is correct
63 Correct 4 ms 512 KB Output is correct
64 Correct 4 ms 512 KB Output is correct
65 Correct 6 ms 512 KB Output is correct
66 Correct 6 ms 512 KB Output is correct
67 Correct 6 ms 512 KB Output is correct
68 Correct 5 ms 512 KB Output is correct
69 Correct 5 ms 512 KB Output is correct
70 Correct 5 ms 512 KB Output is correct
71 Correct 5 ms 512 KB Output is correct
72 Correct 4 ms 512 KB Output is correct
73 Correct 5 ms 512 KB Output is correct
74 Correct 3 ms 512 KB Output is correct

Subtask #3
76.0 / 76.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 3 ms 384 KB Output is correct
18 Correct 3 ms 384 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 3 ms 384 KB Output is correct
23 Correct 2 ms 384 KB Output is correct
24 Correct 2 ms 384 KB Output is correct
25 Correct 2 ms 384 KB Output is correct
26 Correct 2 ms 384 KB Output is correct
27 Correct 2 ms 384 KB Output is correct
28 Correct 2 ms 384 KB Output is correct
29 Correct 3 ms 384 KB Output is correct
30 Correct 2 ms 384 KB Output is correct
31 Correct 2 ms 384 KB Output is correct
32 Correct 3 ms 384 KB Output is correct
33 Correct 2 ms 384 KB Output is correct
34 Correct 2 ms 384 KB Output is correct
35 Correct 2 ms 384 KB Output is correct
36 Correct 2 ms 384 KB Output is correct
37 Correct 2 ms 384 KB Output is correct
38 Correct 6 ms 512 KB Output is correct
39 Correct 5 ms 512 KB Output is correct
40 Correct 4 ms 512 KB Output is correct
41 Correct 4 ms 512 KB Output is correct
42 Correct 3 ms 384 KB Output is correct
43 Correct 5 ms 512 KB Output is correct
44 Correct 4 ms 512 KB Output is correct
45 Correct 5 ms 512 KB Output is correct
46 Correct 4 ms 512 KB Output is correct
47 Correct 5 ms 512 KB Output is correct
48 Correct 5 ms 512 KB Output is correct
49 Correct 5 ms 512 KB Output is correct
50 Correct 5 ms 512 KB Output is correct
51 Correct 5 ms 512 KB Output is correct
52 Correct 5 ms 512 KB Output is correct
53 Correct 4 ms 512 KB Output is correct
54 Correct 4 ms 512 KB Output is correct
55 Correct 4 ms 512 KB Output is correct
56 Correct 4 ms 512 KB Output is correct
57 Correct 4 ms 512 KB Output is correct
58 Correct 4 ms 384 KB Output is correct
59 Correct 5 ms 384 KB Output is correct
60 Correct 5 ms 512 KB Output is correct
61 Correct 4 ms 384 KB Output is correct
62 Correct 4 ms 512 KB Output is correct
63 Correct 4 ms 512 KB Output is correct
64 Correct 4 ms 512 KB Output is correct
65 Correct 6 ms 512 KB Output is correct
66 Correct 6 ms 512 KB Output is correct
67 Correct 6 ms 512 KB Output is correct
68 Correct 5 ms 512 KB Output is correct
69 Correct 5 ms 512 KB Output is correct
70 Correct 5 ms 512 KB Output is correct
71 Correct 5 ms 512 KB Output is correct
72 Correct 4 ms 512 KB Output is correct
73 Correct 5 ms 512 KB Output is correct
74 Correct 3 ms 512 KB Output is correct
75 Correct 825 ms 9980 KB Output is correct
76 Correct 1014 ms 9720 KB Output is correct
77 Correct 661 ms 9848 KB Output is correct
78 Correct 624 ms 10104 KB Output is correct
79 Correct 248 ms 10140 KB Output is correct
80 Correct 360 ms 9820 KB Output is correct
81 Correct 624 ms 10076 KB Output is correct
82 Correct 800 ms 10264 KB Output is correct
83 Correct 742 ms 10428 KB Output is correct
84 Correct 798 ms 10488 KB Output is correct
85 Correct 662 ms 9976 KB Output is correct
86 Correct 456 ms 9848 KB Output is correct
87 Correct 476 ms 9720 KB Output is correct
88 Correct 600 ms 9592 KB Output is correct
89 Correct 627 ms 10104 KB Output is correct
90 Correct 559 ms 10592 KB Output is correct
91 Correct 522 ms 9848 KB Output is correct
92 Correct 499 ms 9764 KB Output is correct
93 Correct 469 ms 10188 KB Output is correct
94 Correct 457 ms 10528 KB Output is correct
95 Correct 512 ms 10488 KB Output is correct
96 Correct 344 ms 9852 KB Output is correct
97 Correct 443 ms 10520 KB Output is correct
98 Correct 367 ms 10360 KB Output is correct
99 Correct 382 ms 10504 KB Output is correct
100 Correct 317 ms 9848 KB Output is correct
101 Correct 342 ms 9848 KB Output is correct
102 Correct 564 ms 9968 KB Output is correct
103 Correct 501 ms 9720 KB Output is correct
104 Correct 554 ms 10296 KB Output is correct
105 Correct 507 ms 10232 KB Output is correct
106 Correct 538 ms 10488 KB Output is correct
107 Correct 466 ms 10104 KB Output is correct
108 Correct 757 ms 9996 KB Output is correct
109 Correct 564 ms 10488 KB Output is correct
110 Correct 408 ms 9976 KB Output is correct
111 Correct 471 ms 10148 KB Output is correct
112 Correct 412 ms 9592 KB Output is correct
113 Correct 118 ms 10488 KB Output is correct