답안 #997008

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
997008	2024-06-11T15:05:49 Z	cadmiumsky	Monochrome Points (JOI20_monochrome)	C++17	100 / 100	1243 ms	17296 KB

monochrome

// problema stupida
// ok dupa asta promit ca ma gandesc serios la problema
#include <bits/stdc++.h>
#define all(x) (x).begin(),(x).end()
using namespace std;

using ll = long long;
using ld = long double;

#define int ll
#define sz(x) ((int)(x).size())

using pii = pair<int,int>;
using tii = tuple<int,int,int>;

const int nmax = 2e5 + 5;

#define lsb(x) (x & -x)
struct AIB {
   vector<int> tree;
   void init(int n) { tree.assign(n + 5, 0); }
   void upd(int p, int x) {
      while(p < sz(tree)) tree[p] += x, p += lsb(p);
   }
   int query(int p) {
      int sum = 0;
      while(p > 0) sum += tree[p], p -= lsb(p);
      return sum;
   }
};



int n;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); // trebuia sa o incerc
ll init(string s, int a = rng() % (2 * n + 1)) {
   vector<pii> segm;
   vector<int> b, w;
   for(int i = 0; i < sz(s); i++)
      (s[i] == 'B'? b : w).emplace_back(i + 1);
   
   for(int i = 0; i < sz(b); i++)
      segm.emplace_back(b[i], w[(i + a) % sz(w)]);
   for(auto &[l, r] : segm) {
      if(l > r) swap(l, r);
   }
   
   sort(all(segm));
   ll sum = 0;
   AIB aib;
   aib.init(sz(s) + 5);
   for(auto [l, r] : segm) {
      sum += aib.query(r) - aib.query(l);
      aib.upd(r, 1);
   }
   return sum;
}


signed main() {
   ld S = clock();
   cin.tie(0) -> sync_with_stdio(0);
   cin >> n;
   
   string s;
   cin >> s;
   ll rez = 0;
   
   int lim = -1;
   for(int i = 20; i >= 0; i--) {
      if(init(s, lim + (1 << i)) <= init(s, lim + (1 << i) + 1)) lim += (1 << i);
   }
   
   cout << init(s, lim + 1) << '\n';
      
}

/**
      Istenem! Nu poate fi real.
-- Surse verificate
*/

Compilation message

monochrome.cpp: In function 'int main()':
monochrome.cpp:61:7: warning: unused variable 'S' [-Wunused-variable]
   61 |    ld S = clock();
      |       ^
monochrome.cpp:67:7: warning: unused variable 'rez' [-Wunused-variable]
   67 |    ll rez = 0;
      |       ^~~

Subtask #1
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	0 ms	344 KB	Output is correct

Subtask #2
21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	0 ms	344 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	1 ms	344 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	1 ms	348 KB	Output is correct
22	Correct	2 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	1 ms	460 KB	Output is correct
25	Correct	1 ms	596 KB	Output is correct
26	Correct	1 ms	348 KB	Output is correct
27	Correct	1 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	1 ms	348 KB	Output is correct
30	Correct	1 ms	348 KB	Output is correct
31	Correct	1 ms	348 KB	Output is correct
32	Correct	1 ms	348 KB	Output is correct
33	Correct	1 ms	432 KB	Output is correct

Subtask #3
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	0 ms	344 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	1 ms	344 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	1 ms	348 KB	Output is correct
22	Correct	2 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	1 ms	460 KB	Output is correct
25	Correct	1 ms	596 KB	Output is correct
26	Correct	1 ms	348 KB	Output is correct
27	Correct	1 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	1 ms	348 KB	Output is correct
30	Correct	1 ms	348 KB	Output is correct
31	Correct	1 ms	348 KB	Output is correct
32	Correct	1 ms	348 KB	Output is correct
33	Correct	1 ms	432 KB	Output is correct
34	Correct	7 ms	604 KB	Output is correct
35	Correct	7 ms	608 KB	Output is correct
36	Correct	6 ms	608 KB	Output is correct
37	Correct	6 ms	604 KB	Output is correct
38	Correct	4 ms	600 KB	Output is correct
39	Correct	4 ms	604 KB	Output is correct
40	Correct	4 ms	604 KB	Output is correct
41	Correct	5 ms	604 KB	Output is correct
42	Correct	8 ms	604 KB	Output is correct
43	Correct	6 ms	600 KB	Output is correct
44	Correct	6 ms	604 KB	Output is correct
45	Correct	4 ms	604 KB	Output is correct
46	Correct	4 ms	604 KB	Output is correct
47	Correct	5 ms	596 KB	Output is correct
48	Correct	5 ms	600 KB	Output is correct
49	Correct	4 ms	596 KB	Output is correct
50	Correct	3 ms	348 KB	Output is correct
51	Correct	5 ms	604 KB	Output is correct
52	Correct	6 ms	608 KB	Output is correct

Subtask #4
65.0 / 65.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	0 ms	344 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	1 ms	344 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	1 ms	348 KB	Output is correct
22	Correct	2 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	1 ms	460 KB	Output is correct
25	Correct	1 ms	596 KB	Output is correct
26	Correct	1 ms	348 KB	Output is correct
27	Correct	1 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	1 ms	348 KB	Output is correct
30	Correct	1 ms	348 KB	Output is correct
31	Correct	1 ms	348 KB	Output is correct
32	Correct	1 ms	348 KB	Output is correct
33	Correct	1 ms	432 KB	Output is correct
34	Correct	7 ms	604 KB	Output is correct
35	Correct	7 ms	608 KB	Output is correct
36	Correct	6 ms	608 KB	Output is correct
37	Correct	6 ms	604 KB	Output is correct
38	Correct	4 ms	600 KB	Output is correct
39	Correct	4 ms	604 KB	Output is correct
40	Correct	4 ms	604 KB	Output is correct
41	Correct	5 ms	604 KB	Output is correct
42	Correct	8 ms	604 KB	Output is correct
43	Correct	6 ms	600 KB	Output is correct
44	Correct	6 ms	604 KB	Output is correct
45	Correct	4 ms	604 KB	Output is correct
46	Correct	4 ms	604 KB	Output is correct
47	Correct	5 ms	596 KB	Output is correct
48	Correct	5 ms	600 KB	Output is correct
49	Correct	4 ms	596 KB	Output is correct
50	Correct	3 ms	348 KB	Output is correct
51	Correct	5 ms	604 KB	Output is correct
52	Correct	6 ms	608 KB	Output is correct
53	Correct	1231 ms	17116 KB	Output is correct
54	Correct	1214 ms	17052 KB	Output is correct
55	Correct	1107 ms	13684 KB	Output is correct
56	Correct	1139 ms	16040 KB	Output is correct
57	Correct	776 ms	14140 KB	Output is correct
58	Correct	976 ms	17224 KB	Output is correct
59	Correct	902 ms	15672 KB	Output is correct
60	Correct	913 ms	16320 KB	Output is correct
61	Correct	1002 ms	16748 KB	Output is correct
62	Correct	907 ms	15976 KB	Output is correct
63	Correct	1068 ms	14212 KB	Output is correct
64	Correct	973 ms	17296 KB	Output is correct
65	Correct	1164 ms	15616 KB	Output is correct
66	Correct	804 ms	15148 KB	Output is correct
67	Correct	816 ms	15432 KB	Output is correct
68	Correct	1026 ms	14636 KB	Output is correct
69	Correct	990 ms	16824 KB	Output is correct
70	Correct	920 ms	13896 KB	Output is correct
71	Correct	787 ms	15584 KB	Output is correct
72	Correct	1140 ms	15792 KB	Output is correct
73	Correct	1243 ms	17056 KB	Output is correct

답안 #997008

Compilation message

Subtask #1 4.0 / 4.0

Subtask #2 21.0 / 21.0

Subtask #3 10.0 / 10.0

Subtask #4 65.0 / 65.0

Subtask #1
4.0 / 4.0

Subtask #2
21.0 / 21.0

Subtask #3
10.0 / 10.0

Subtask #4
65.0 / 65.0