oj.uz

Submission #204944

# Submission time Handle Problem Language Result Execution time Memory
204944 2020-02-27T14:05:54 Z ics0503 Cake 3 (JOI19_cake3) C++17
100 / 100
 3608 ms 23652 KB 
#include<stdio.h>
#include<algorithm>
#include<vector>
#include<set>
using namespace std;
long long n, m, allSum = 0;
multiset<long long >L, R; // R is big
void balance() {
	if (L.size() == 0 || R.size() == 0)return;
	if (R.size() < m) {
		long long lmax = (*L.rbegin());
		L.erase(L.find(lmax)); R.insert(lmax);
		allSum += lmax;
		return;
	}
	long long lmax = (*L.rbegin()), rmin = (*R.begin());
	if (lmax > rmin) {
		L.erase(L.find(lmax)); R.erase(R.find(rmin));
		L.insert(rmin); R.insert(lmax);
		allSum += lmax - rmin;
	}
}
void add(long long x) {
	if (R.size() < m) { R.insert(x); allSum += x; }
	else L.insert(x);
	balance();
}
void del(long long x) {
	if (L.find(x) != L.end())L.erase(L.find(x));
	else { R.erase(R.find(x)); allSum -= x; }
	balance();
}
struct vc { long long v, c; }a[212121];
bool sort_c(vc a, vc b) {
	if (a.c != b.c)return a.c < b.c;
	return a.v < b.v;
}
struct qr { long long s, e, p, q; };
long long get_ans() {
	vector<qr>Q, nxtQ;
	long long ans = -1e18;
	Q.push_back({ m - 1, n - 1, 0, n - 1  });
	while (!Q.empty()) {
		long long l = n, r = n-1;
		for (qr Q : Q) {
			long long s = Q.s, e = Q.e, p = Q.p, q = Q.q;
			if (s > e)continue;
			long long mid = (s + e) / 2, pv;
			while (mid - m + 1 < l || q < l) { l--; add(a[l].v); }
			while (mid < r) { del(a[r].v); r--; }
			long long res = allSum - 2 * (a[r].c - a[l].c); pv = l;
			ans = max(ans, res);
			while (p < l) {
				l--; add(a[l].v);
				long long RES = allSum - 2 * (a[r].c - a[l].c);
				if (res < RES)res = RES, pv = l;
				ans = max(ans, res);
			}
			nxtQ.push_back({ mid + 1, e,pv, q });
			nxtQ.push_back({ s, mid - 1 ,p, pv });
		}
		L.clear(); R.clear(); allSum = 0;
		Q.clear();
		for (qr q : nxtQ)Q.push_back(q);
		nxtQ.clear();
	}
	return ans;
}

int main() {
	long long i, j; scanf("%lld%lld", &n, &m);
	for (i = 0; i < n; i++) scanf("%lld%lld", &a[i].v, &a[i].c);
	sort(a, a + n, sort_c);
	printf("%lld", get_ans());
	return 0;
}

Compilation message

cake3.cpp: In function 'void balance()':
cake3.cpp:10:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (R.size() < m) {
      ~~~~~~~~~^~~
cake3.cpp: In function 'void add(long long int)':
cake3.cpp:24:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (R.size() < m) { R.insert(x); allSum += x; }
      ~~~~~~~~~^~~
cake3.cpp: In function 'int main()':
cake3.cpp:71:15: warning: unused variable 'j' [-Wunused-variable]
  long long i, j; scanf("%lld%lld", &n, &m);
               ^
cake3.cpp:71:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  long long i, j; scanf("%lld%lld", &n, &m);
                  ~~~~~^~~~~~~~~~~~~~~~~~~~
cake3.cpp:72:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for (i = 0; i < n; i++) scanf("%lld%lld", &a[i].v, &a[i].c);
                          ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 256 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 6 ms 376 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 256 KB Output is correct
13 Correct 5 ms 256 KB Output is correct
14 Correct 5 ms 256 KB Output is correct
15 Correct 6 ms 256 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Correct 5 ms 256 KB Output is correct
19 Correct 5 ms 256 KB Output is correct
20 Correct 5 ms 256 KB Output is correct
21 Correct 5 ms 256 KB Output is correct
22 Correct 5 ms 376 KB Output is correct
23 Correct 5 ms 256 KB Output is correct
24 Correct 5 ms 256 KB Output is correct
25 Correct 5 ms 256 KB Output is correct
26 Correct 5 ms 256 KB Output is correct
27 Correct 5 ms 256 KB Output is correct
28 Correct 5 ms 256 KB Output is correct
29 Correct 5 ms 256 KB Output is correct
30 Correct 5 ms 256 KB Output is correct
31 Correct 5 ms 256 KB Output is correct
32 Correct 5 ms 256 KB Output is correct
33 Correct 5 ms 256 KB Output is correct
34 Correct 5 ms 256 KB Output is correct
35 Correct 5 ms 392 KB Output is correct
36 Correct 4 ms 256 KB Output is correct
37 Correct 5 ms 256 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 256 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 6 ms 376 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 256 KB Output is correct
13 Correct 5 ms 256 KB Output is correct
14 Correct 5 ms 256 KB Output is correct
15 Correct 6 ms 256 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Correct 5 ms 256 KB Output is correct
19 Correct 5 ms 256 KB Output is correct
20 Correct 5 ms 256 KB Output is correct
21 Correct 5 ms 256 KB Output is correct
22 Correct 5 ms 376 KB Output is correct
23 Correct 5 ms 256 KB Output is correct
24 Correct 5 ms 256 KB Output is correct
25 Correct 5 ms 256 KB Output is correct
26 Correct 5 ms 256 KB Output is correct
27 Correct 5 ms 256 KB Output is correct
28 Correct 5 ms 256 KB Output is correct
29 Correct 5 ms 256 KB Output is correct
30 Correct 5 ms 256 KB Output is correct
31 Correct 5 ms 256 KB Output is correct
32 Correct 5 ms 256 KB Output is correct
33 Correct 5 ms 256 KB Output is correct
34 Correct 5 ms 256 KB Output is correct
35 Correct 5 ms 392 KB Output is correct
36 Correct 4 ms 256 KB Output is correct
37 Correct 5 ms 256 KB Output is correct
38 Correct 14 ms 504 KB Output is correct
39 Correct 14 ms 504 KB Output is correct
40 Correct 12 ms 504 KB Output is correct
41 Correct 14 ms 504 KB Output is correct
42 Correct 10 ms 504 KB Output is correct
43 Correct 11 ms 504 KB Output is correct
44 Correct 14 ms 504 KB Output is correct
45 Correct 14 ms 504 KB Output is correct
46 Correct 15 ms 504 KB Output is correct
47 Correct 15 ms 504 KB Output is correct
48 Correct 15 ms 504 KB Output is correct
49 Correct 14 ms 504 KB Output is correct
50 Correct 14 ms 504 KB Output is correct
51 Correct 14 ms 424 KB Output is correct
52 Correct 12 ms 504 KB Output is correct
53 Correct 14 ms 504 KB Output is correct
54 Correct 11 ms 504 KB Output is correct
55 Correct 10 ms 504 KB Output is correct
56 Correct 15 ms 504 KB Output is correct
57 Correct 11 ms 504 KB Output is correct
58 Correct 11 ms 508 KB Output is correct
59 Correct 8 ms 504 KB Output is correct
60 Correct 10 ms 504 KB Output is correct
61 Correct 8 ms 504 KB Output is correct
62 Correct 8 ms 504 KB Output is correct
63 Correct 9 ms 504 KB Output is correct
64 Correct 8 ms 508 KB Output is correct
65 Correct 14 ms 504 KB Output is correct
66 Correct 13 ms 504 KB Output is correct
67 Correct 14 ms 504 KB Output is correct
68 Correct 14 ms 504 KB Output is correct
69 Correct 13 ms 632 KB Output is correct
70 Correct 13 ms 504 KB Output is correct
71 Correct 13 ms 504 KB Output is correct
72 Correct 11 ms 504 KB Output is correct
73 Correct 10 ms 504 KB Output is correct
74 Correct 6 ms 504 KB Output is correct

Subtask #3
76.0 / 76.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 256 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 6 ms 376 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 256 KB Output is correct
13 Correct 5 ms 256 KB Output is correct
14 Correct 5 ms 256 KB Output is correct
15 Correct 6 ms 256 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Correct 5 ms 256 KB Output is correct
19 Correct 5 ms 256 KB Output is correct
20 Correct 5 ms 256 KB Output is correct
21 Correct 5 ms 256 KB Output is correct
22 Correct 5 ms 376 KB Output is correct
23 Correct 5 ms 256 KB Output is correct
24 Correct 5 ms 256 KB Output is correct
25 Correct 5 ms 256 KB Output is correct
26 Correct 5 ms 256 KB Output is correct
27 Correct 5 ms 256 KB Output is correct
28 Correct 5 ms 256 KB Output is correct
29 Correct 5 ms 256 KB Output is correct
30 Correct 5 ms 256 KB Output is correct
31 Correct 5 ms 256 KB Output is correct
32 Correct 5 ms 256 KB Output is correct
33 Correct 5 ms 256 KB Output is correct
34 Correct 5 ms 256 KB Output is correct
35 Correct 5 ms 392 KB Output is correct
36 Correct 4 ms 256 KB Output is correct
37 Correct 5 ms 256 KB Output is correct
38 Correct 14 ms 504 KB Output is correct
39 Correct 14 ms 504 KB Output is correct
40 Correct 12 ms 504 KB Output is correct
41 Correct 14 ms 504 KB Output is correct
42 Correct 10 ms 504 KB Output is correct
43 Correct 11 ms 504 KB Output is correct
44 Correct 14 ms 504 KB Output is correct
45 Correct 14 ms 504 KB Output is correct
46 Correct 15 ms 504 KB Output is correct
47 Correct 15 ms 504 KB Output is correct
48 Correct 15 ms 504 KB Output is correct
49 Correct 14 ms 504 KB Output is correct
50 Correct 14 ms 504 KB Output is correct
51 Correct 14 ms 424 KB Output is correct
52 Correct 12 ms 504 KB Output is correct
53 Correct 14 ms 504 KB Output is correct
54 Correct 11 ms 504 KB Output is correct
55 Correct 10 ms 504 KB Output is correct
56 Correct 15 ms 504 KB Output is correct
57 Correct 11 ms 504 KB Output is correct
58 Correct 11 ms 508 KB Output is correct
59 Correct 8 ms 504 KB Output is correct
60 Correct 10 ms 504 KB Output is correct
61 Correct 8 ms 504 KB Output is correct
62 Correct 8 ms 504 KB Output is correct
63 Correct 9 ms 504 KB Output is correct
64 Correct 8 ms 508 KB Output is correct
65 Correct 14 ms 504 KB Output is correct
66 Correct 13 ms 504 KB Output is correct
67 Correct 14 ms 504 KB Output is correct
68 Correct 14 ms 504 KB Output is correct
69 Correct 13 ms 632 KB Output is correct
70 Correct 13 ms 504 KB Output is correct
71 Correct 13 ms 504 KB Output is correct
72 Correct 11 ms 504 KB Output is correct
73 Correct 10 ms 504 KB Output is correct
74 Correct 6 ms 504 KB Output is correct
75 Correct 3608 ms 23652 KB Output is correct
76 Correct 3593 ms 23408 KB Output is correct
77 Correct 3448 ms 21992 KB Output is correct
78 Correct 3581 ms 22336 KB Output is correct
79 Correct 1109 ms 16248 KB Output is correct
80 Correct 1779 ms 16304 KB Output is correct
81 Correct 3036 ms 17384 KB Output is correct
82 Correct 3259 ms 17848 KB Output is correct
83 Correct 3408 ms 18572 KB Output is correct
84 Correct 3371 ms 18404 KB Output is correct
85 Correct 2978 ms 17696 KB Output is correct
86 Correct 2661 ms 15448 KB Output is correct
87 Correct 2665 ms 14724 KB Output is correct
88 Correct 2881 ms 16796 KB Output is correct
89 Correct 3249 ms 17248 KB Output is correct
90 Correct 3290 ms 16312 KB Output is correct
91 Correct 2582 ms 15528 KB Output is correct
92 Correct 2552 ms 15152 KB Output is correct
93 Correct 2944 ms 16276 KB Output is correct
94 Correct 2896 ms 16040 KB Output is correct
95 Correct 3199 ms 16424 KB Output is correct
96 Correct 569 ms 16560 KB Output is correct
97 Correct 636 ms 17804 KB Output is correct
98 Correct 632 ms 17776 KB Output is correct
99 Correct 614 ms 17468 KB Output is correct
100 Correct 597 ms 14684 KB Output is correct
101 Correct 595 ms 14292 KB Output is correct
102 Correct 2209 ms 18812 KB Output is correct
103 Correct 2039 ms 18896 KB Output is correct
104 Correct 2241 ms 18952 KB Output is correct
105 Correct 2140 ms 18004 KB Output is correct
106 Correct 2137 ms 18736 KB Output is correct
107 Correct 2005 ms 16980 KB Output is correct
108 Correct 3476 ms 22136 KB Output is correct
109 Correct 3460 ms 20968 KB Output is correct
110 Correct 1706 ms 14104 KB Output is correct
111 Correct 2178 ms 16132 KB Output is correct
112 Correct 923 ms 15656 KB Output is correct
113 Correct 220 ms 16888 KB Output is correct