oj.uz

Submission #962341

# Submission time Handle Problem Language Result Execution time Memory
962341 2024-04-13T10:54:08 Z 0npata Monochrome Points (JOI20_monochrome) C++17
35 / 100
 2000 ms 11760 KB 
#include<bits/stdc++.h>
using namespace std;

#define int long long
#define vec vector
#define pi pair<int, int>
#define fst first
#define snd second
#define pb push_back

int n;
string s;
int mes(vec<pi> p) {
	int res = 0;

	int j = p[0].fst;
	int k = p[0].fst;

	int cntw = 1;
	int cntb = 0;

	for(int i = 0; i<n; i++) {
		while(k != p[i].fst) {
			cntw -= s[k]=='W';
			cntb -= s[k] == 'B';
			k+=1;
			k %= 2*n;
		}
		while(j != p[i].snd) {
			j += 1;
			j %= 2*n;
			cntw += s[j]=='W';
			cntb += s[j] == 'B';
		}
		int rw = cntw-1;
		int orb = n-cntb;
		res += min(rw, orb);
	}

	return res;
}

int32_t main() {
	cin >> n;
	cin >> s;

	vec<int> b(0);
	vec<int> w(0);

	for(int i = 0; i<s.size(); i++) {
		if(s[i] == 'W') {
			w.pb(i);
		}
		else {
			b.pb(i);
		}
	}

	int ans = 0;



	for(int i = 0; i<n; i++) {
		// construct possible pairings
		vec<pi> p;
		for(int j = 0; j<n; j++) {
			p.pb({w[j], b[(j+i)%n]});
		}
		int res = mes(p);

		ans = max(res, ans);

//		cout << i << ": "  << res << '\n';
	}

	cout << ans << '\n';
}

Compilation message

monochrome.cpp: In function 'int32_t main()':
monochrome.cpp:50:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |  for(int i = 0; i<s.size(); i++) {
      |                 ~^~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 4 ms 464 KB Output is correct
15 Correct 4 ms 440 KB Output is correct
16 Correct 4 ms 348 KB Output is correct
17 Correct 4 ms 344 KB Output is correct
18 Correct 3 ms 348 KB Output is correct
19 Correct 3 ms 432 KB Output is correct
20 Correct 3 ms 348 KB Output is correct
21 Correct 3 ms 348 KB Output is correct
22 Correct 3 ms 468 KB Output is correct
23 Correct 2 ms 348 KB Output is correct
24 Correct 2 ms 348 KB Output is correct
25 Correct 2 ms 348 KB Output is correct
26 Correct 3 ms 472 KB Output is correct
27 Correct 3 ms 344 KB Output is correct
28 Correct 3 ms 348 KB Output is correct
29 Correct 2 ms 348 KB Output is correct
30 Correct 3 ms 348 KB Output is correct
31 Correct 3 ms 464 KB Output is correct
32 Correct 3 ms 348 KB Output is correct
33 Correct 3 ms 348 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 4 ms 464 KB Output is correct
15 Correct 4 ms 440 KB Output is correct
16 Correct 4 ms 348 KB Output is correct
17 Correct 4 ms 344 KB Output is correct
18 Correct 3 ms 348 KB Output is correct
19 Correct 3 ms 432 KB Output is correct
20 Correct 3 ms 348 KB Output is correct
21 Correct 3 ms 348 KB Output is correct
22 Correct 3 ms 468 KB Output is correct
23 Correct 2 ms 348 KB Output is correct
24 Correct 2 ms 348 KB Output is correct
25 Correct 2 ms 348 KB Output is correct
26 Correct 3 ms 472 KB Output is correct
27 Correct 3 ms 344 KB Output is correct
28 Correct 3 ms 348 KB Output is correct
29 Correct 2 ms 348 KB Output is correct
30 Correct 3 ms 348 KB Output is correct
31 Correct 3 ms 464 KB Output is correct
32 Correct 3 ms 348 KB Output is correct
33 Correct 3 ms 348 KB Output is correct
34 Correct 170 ms 564 KB Output is correct
35 Correct 173 ms 348 KB Output is correct
36 Correct 166 ms 556 KB Output is correct
37 Correct 153 ms 548 KB Output is correct
38 Correct 108 ms 556 KB Output is correct
39 Correct 119 ms 556 KB Output is correct
40 Correct 108 ms 544 KB Output is correct
41 Correct 103 ms 548 KB Output is correct
42 Correct 154 ms 348 KB Output is correct
43 Correct 122 ms 348 KB Output is correct
44 Correct 113 ms 552 KB Output is correct
45 Correct 111 ms 348 KB Output is correct
46 Correct 119 ms 344 KB Output is correct
47 Correct 134 ms 544 KB Output is correct
48 Correct 130 ms 556 KB Output is correct
49 Correct 106 ms 548 KB Output is correct
50 Correct 119 ms 548 KB Output is correct
51 Correct 119 ms 344 KB Output is correct
52 Correct 127 ms 560 KB Output is correct

Subtask #4
0.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 4 ms 464 KB Output is correct
15 Correct 4 ms 440 KB Output is correct
16 Correct 4 ms 348 KB Output is correct
17 Correct 4 ms 344 KB Output is correct
18 Correct 3 ms 348 KB Output is correct
19 Correct 3 ms 432 KB Output is correct
20 Correct 3 ms 348 KB Output is correct
21 Correct 3 ms 348 KB Output is correct
22 Correct 3 ms 468 KB Output is correct
23 Correct 2 ms 348 KB Output is correct
24 Correct 2 ms 348 KB Output is correct
25 Correct 2 ms 348 KB Output is correct
26 Correct 3 ms 472 KB Output is correct
27 Correct 3 ms 344 KB Output is correct
28 Correct 3 ms 348 KB Output is correct
29 Correct 2 ms 348 KB Output is correct
30 Correct 3 ms 348 KB Output is correct
31 Correct 3 ms 464 KB Output is correct
32 Correct 3 ms 348 KB Output is correct
33 Correct 3 ms 348 KB Output is correct
34 Correct 170 ms 564 KB Output is correct
35 Correct 173 ms 348 KB Output is correct
36 Correct 166 ms 556 KB Output is correct
37 Correct 153 ms 548 KB Output is correct
38 Correct 108 ms 556 KB Output is correct
39 Correct 119 ms 556 KB Output is correct
40 Correct 108 ms 544 KB Output is correct
41 Correct 103 ms 548 KB Output is correct
42 Correct 154 ms 348 KB Output is correct
43 Correct 122 ms 348 KB Output is correct
44 Correct 113 ms 552 KB Output is correct
45 Correct 111 ms 348 KB Output is correct
46 Correct 119 ms 344 KB Output is correct
47 Correct 134 ms 544 KB Output is correct
48 Correct 130 ms 556 KB Output is correct
49 Correct 106 ms 548 KB Output is correct
50 Correct 119 ms 548 KB Output is correct
51 Correct 119 ms 344 KB Output is correct
52 Correct 127 ms 560 KB Output is correct
53 Execution timed out 2057 ms 11760 KB Time limit exceeded
54 Halted 0 ms 0 KB -