oj.uz

Submission #118852

# Submission time Handle Problem Language Result Execution time Memory
118852 2019-06-19T23:48:42 Z tmwilliamlin168 Cake 3 (JOI19_cake3) C++14
100 / 100
 786 ms 14328 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

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 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 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 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 2 ms 384 KB Output is correct
11 Correct 2 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 384 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 2 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 2 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 436 KB Output is correct
28 Correct 2 ms 384 KB Output is correct
29 Correct 2 ms 384 KB Output is correct
30 Correct 2 ms 384 KB Output is correct
31 Correct 2 ms 512 KB Output is correct
32 Correct 2 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

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 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 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 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 2 ms 384 KB Output is correct
11 Correct 2 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 384 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 2 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 2 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 436 KB Output is correct
28 Correct 2 ms 384 KB Output is correct
29 Correct 2 ms 384 KB Output is correct
30 Correct 2 ms 384 KB Output is correct
31 Correct 2 ms 512 KB Output is correct
32 Correct 2 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 5 ms 640 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 4 ms 512 KB Output is correct
43 Correct 4 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 4 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 4 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 3 ms 512 KB Output is correct
59 Correct 4 ms 512 KB Output is correct
60 Correct 5 ms 512 KB Output is correct
61 Correct 4 ms 512 KB Output is correct
62 Correct 3 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 4 ms 512 KB Output is correct
66 Correct 4 ms 512 KB Output is correct
67 Correct 5 ms 512 KB Output is correct
68 Correct 5 ms 512 KB Output is correct
69 Correct 5 ms 572 KB Output is correct
70 Correct 4 ms 512 KB Output is correct
71 Correct 4 ms 512 KB Output is correct
72 Correct 4 ms 512 KB Output is correct
73 Correct 4 ms 512 KB Output is correct
74 Correct 3 ms 512 KB Output is correct

Subtask #3
76.0 / 76.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 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 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 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 2 ms 384 KB Output is correct
11 Correct 2 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 384 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 2 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 2 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 436 KB Output is correct
28 Correct 2 ms 384 KB Output is correct
29 Correct 2 ms 384 KB Output is correct
30 Correct 2 ms 384 KB Output is correct
31 Correct 2 ms 512 KB Output is correct
32 Correct 2 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 5 ms 640 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 4 ms 512 KB Output is correct
43 Correct 4 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 4 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 4 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 3 ms 512 KB Output is correct
59 Correct 4 ms 512 KB Output is correct
60 Correct 5 ms 512 KB Output is correct
61 Correct 4 ms 512 KB Output is correct
62 Correct 3 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 4 ms 512 KB Output is correct
66 Correct 4 ms 512 KB Output is correct
67 Correct 5 ms 512 KB Output is correct
68 Correct 5 ms 512 KB Output is correct
69 Correct 5 ms 572 KB Output is correct
70 Correct 4 ms 512 KB Output is correct
71 Correct 4 ms 512 KB Output is correct
72 Correct 4 ms 512 KB Output is correct
73 Correct 4 ms 512 KB Output is correct
74 Correct 3 ms 512 KB Output is correct
75 Correct 614 ms 13432 KB Output is correct
76 Correct 736 ms 13220 KB Output is correct
77 Correct 616 ms 13560 KB Output is correct
78 Correct 637 ms 13788 KB Output is correct
79 Correct 232 ms 13660 KB Output is correct
80 Correct 326 ms 13364 KB Output is correct
81 Correct 612 ms 12792 KB Output is correct
82 Correct 726 ms 13176 KB Output is correct
83 Correct 719 ms 13560 KB Output is correct
84 Correct 786 ms 13560 KB Output is correct
85 Correct 646 ms 13048 KB Output is correct
86 Correct 470 ms 12536 KB Output is correct
87 Correct 482 ms 12408 KB Output is correct
88 Correct 578 ms 12408 KB Output is correct
89 Correct 599 ms 12920 KB Output is correct
90 Correct 540 ms 13560 KB Output is correct
91 Correct 415 ms 12536 KB Output is correct
92 Correct 436 ms 12576 KB Output is correct
93 Correct 457 ms 12892 KB Output is correct
94 Correct 471 ms 13436 KB Output is correct
95 Correct 516 ms 13600 KB Output is correct
96 Correct 316 ms 12536 KB Output is correct
97 Correct 339 ms 13560 KB Output is correct
98 Correct 339 ms 13432 KB Output is correct
99 Correct 330 ms 13360 KB Output is correct
100 Correct 288 ms 12536 KB Output is correct
101 Correct 291 ms 12536 KB Output is correct
102 Correct 506 ms 12664 KB Output is correct
103 Correct 487 ms 12508 KB Output is correct
104 Correct 522 ms 13176 KB Output is correct
105 Correct 457 ms 13048 KB Output is correct
106 Correct 479 ms 13392 KB Output is correct
107 Correct 423 ms 12868 KB Output is correct
108 Correct 594 ms 13560 KB Output is correct
109 Correct 683 ms 14200 KB Output is correct
110 Correct 399 ms 12024 KB Output is correct
111 Correct 470 ms 12408 KB Output is correct
112 Correct 417 ms 11756 KB Output is correct
113 Correct 123 ms 14328 KB Output is correct