oj.uz

Submission #1031869

# Submission time Handle Problem Language Result Execution time Memory
1031869 2024-07-23T08:16:33 Z 김은성(#10960) Monochrome Points (JOI20_monochrome) C++17
35 / 100
 1008 ms 3140 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
char s[400009];
int main(){
    int n, i;
    scanf("%d", &n);
    scanf(" %s", s);
    vector<int> b, w;
    for(i=0; i<2*n; i++){
        if(s[i] == 'B')
            b.push_back(i);
        else
            w.push_back(i);
    }
    ll ans = 0;
    int temp = lower_bound(w.begin(), w.end(), b[0]+n) - w.begin();
    for(int j=0; j<=500; j++){
        ll cnt = 0;
        for(i=0; i<n; i++){
            cnt += n - min((w[(i+j+1000*n)%n]-b[i]+6*n)%(2*n), 2*n - (w[(i+j+1000*n)%n]-b[i]+6*n)%(2*n));
        }
        ans = max(ans, (ll)n*(ll)(n-1)/2 - cnt/2);
    }
    for(int j=temp-400; j<=temp+400; j++){
        ll cnt = 0;
        for(i=0; i<n; i++){
            cnt += n - min((w[(i+j+1000*n)%n]-b[i]+6*n)%(2*n), 2*n - (w[(i+j+1000*n)%n]-b[i]+6*n)%(2*n));
        }
        ans = max(ans, (ll)n*(ll)(n-1)/2  - cnt/2);
    }
    printf("%lld\n", ans);
    return 0;
}

Compilation message

monochrome.cpp: In function 'int main()':
monochrome.cpp:7:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
monochrome.cpp:8:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |     scanf(" %s", s);
      |     ~~~~~^~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 0 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 344 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 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 0 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 344 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 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 2 ms 348 KB Output is correct
15 Correct 2 ms 348 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 2 ms 348 KB Output is correct
19 Correct 2 ms 348 KB Output is correct
20 Correct 2 ms 348 KB Output is correct
21 Correct 2 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 2 ms 348 KB Output is correct
25 Correct 2 ms 344 KB Output is correct
26 Correct 2 ms 348 KB Output is correct
27 Correct 2 ms 348 KB Output is correct
28 Correct 2 ms 348 KB Output is correct
29 Correct 2 ms 348 KB Output is correct
30 Correct 2 ms 348 KB Output is correct
31 Correct 2 ms 348 KB Output is correct
32 Correct 2 ms 348 KB Output is correct
33 Correct 2 ms 348 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 0 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 344 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 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 2 ms 348 KB Output is correct
15 Correct 2 ms 348 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 2 ms 348 KB Output is correct
19 Correct 2 ms 348 KB Output is correct
20 Correct 2 ms 348 KB Output is correct
21 Correct 2 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 2 ms 348 KB Output is correct
25 Correct 2 ms 344 KB Output is correct
26 Correct 2 ms 348 KB Output is correct
27 Correct 2 ms 348 KB Output is correct
28 Correct 2 ms 348 KB Output is correct
29 Correct 2 ms 348 KB Output is correct
30 Correct 2 ms 348 KB Output is correct
31 Correct 2 ms 348 KB Output is correct
32 Correct 2 ms 348 KB Output is correct
33 Correct 2 ms 348 KB Output is correct
34 Correct 11 ms 600 KB Output is correct
35 Correct 10 ms 348 KB Output is correct
36 Correct 11 ms 468 KB Output is correct
37 Correct 10 ms 344 KB Output is correct
38 Correct 10 ms 348 KB Output is correct
39 Correct 10 ms 348 KB Output is correct
40 Correct 10 ms 472 KB Output is correct
41 Correct 9 ms 472 KB Output is correct
42 Correct 10 ms 348 KB Output is correct
43 Correct 9 ms 348 KB Output is correct
44 Correct 8 ms 348 KB Output is correct
45 Correct 10 ms 468 KB Output is correct
46 Correct 9 ms 464 KB Output is correct
47 Correct 9 ms 352 KB Output is correct
48 Correct 9 ms 352 KB Output is correct
49 Correct 10 ms 348 KB Output is correct
50 Correct 9 ms 460 KB Output is correct
51 Correct 9 ms 348 KB Output is correct
52 Correct 9 ms 348 KB Output is correct

Subtask #4
0.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 0 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 344 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 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 2 ms 348 KB Output is correct
15 Correct 2 ms 348 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 2 ms 348 KB Output is correct
19 Correct 2 ms 348 KB Output is correct
20 Correct 2 ms 348 KB Output is correct
21 Correct 2 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 2 ms 348 KB Output is correct
25 Correct 2 ms 344 KB Output is correct
26 Correct 2 ms 348 KB Output is correct
27 Correct 2 ms 348 KB Output is correct
28 Correct 2 ms 348 KB Output is correct
29 Correct 2 ms 348 KB Output is correct
30 Correct 2 ms 348 KB Output is correct
31 Correct 2 ms 348 KB Output is correct
32 Correct 2 ms 348 KB Output is correct
33 Correct 2 ms 348 KB Output is correct
34 Correct 11 ms 600 KB Output is correct
35 Correct 10 ms 348 KB Output is correct
36 Correct 11 ms 468 KB Output is correct
37 Correct 10 ms 344 KB Output is correct
38 Correct 10 ms 348 KB Output is correct
39 Correct 10 ms 348 KB Output is correct
40 Correct 10 ms 472 KB Output is correct
41 Correct 9 ms 472 KB Output is correct
42 Correct 10 ms 348 KB Output is correct
43 Correct 9 ms 348 KB Output is correct
44 Correct 8 ms 348 KB Output is correct
45 Correct 10 ms 468 KB Output is correct
46 Correct 9 ms 464 KB Output is correct
47 Correct 9 ms 352 KB Output is correct
48 Correct 9 ms 352 KB Output is correct
49 Correct 10 ms 348 KB Output is correct
50 Correct 9 ms 460 KB Output is correct
51 Correct 9 ms 348 KB Output is correct
52 Correct 9 ms 348 KB Output is correct
53 Correct 909 ms 2400 KB Output is correct
54 Correct 1008 ms 2828 KB Output is correct
55 Correct 946 ms 2904 KB Output is correct
56 Correct 910 ms 2680 KB Output is correct
57 Correct 942 ms 2896 KB Output is correct
58 Incorrect 969 ms 3140 KB Output isn't correct
59 Halted 0 ms 0 KB -