답안 #800610

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
800610 2023-08-01T16:43:54 Z Dan4Life Monochrome Points (JOI20_monochrome) C++17
35 / 100
195 ms 868 KB
#include <bits/stdc++.h>
using namespace std;
const int N = (int)4e3+10;
string s; int n, ans, tot, fen[N], st[N];
void upd(int x, int v){ for(; x<N; x+=x&-x) fen[x]+=v; }
int sum(int x){ int s=0; for(; x>0; x-=x&-x)s+=fen[x]; return s; }
int sum(int a, int b){ return (a<=b)*(sum(b)-sum(a-1)); }

int main()
{
    cin >> n >> s; vector<int> v[2]; if(n>2000) {cout<<0;return 0;}
    for(int i = 0; i < 2*n; i++) v[s[i]>'B'].push_back(i+1);
    for(int k = 0; k < n; k++){ tot=0;
        for(int i = 0; i < n; i++){
            int a = v[0][i], b = v[1][(i+k)%n];
            if(a>b) swap(a,b); st[a] = a; st[b]=a;
        }
        for(int i = 1; i <= 2*n; i++){
            if(st[i]==i) upd(st[i],1);
            else tot+=sum(st[i]+1,i), upd(st[i],-1);
        }
        ans = max(ans, tot);
    }
    cout << ans;
}

Compilation message

monochrome.cpp: In function 'int main()':
monochrome.cpp:16:13: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   16 |             if(a>b) swap(a,b); st[a] = a; st[b]=a;
      |             ^~
monochrome.cpp:16:32: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   16 |             if(a>b) swap(a,b); st[a] = a; st[b]=a;
      |                                ^~
# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 260 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 260 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 4 ms 212 KB Output is correct
15 Correct 4 ms 212 KB Output is correct
16 Correct 4 ms 212 KB Output is correct
17 Correct 4 ms 212 KB Output is correct
18 Correct 3 ms 212 KB Output is correct
19 Correct 3 ms 324 KB Output is correct
20 Correct 3 ms 212 KB Output is correct
21 Correct 4 ms 212 KB Output is correct
22 Correct 3 ms 212 KB Output is correct
23 Correct 2 ms 212 KB Output is correct
24 Correct 3 ms 212 KB Output is correct
25 Correct 3 ms 212 KB Output is correct
26 Correct 3 ms 212 KB Output is correct
27 Correct 3 ms 320 KB Output is correct
28 Correct 3 ms 212 KB Output is correct
29 Correct 3 ms 212 KB Output is correct
30 Correct 3 ms 212 KB Output is correct
31 Correct 3 ms 212 KB Output is correct
32 Correct 3 ms 212 KB Output is correct
33 Correct 3 ms 212 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 260 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 4 ms 212 KB Output is correct
15 Correct 4 ms 212 KB Output is correct
16 Correct 4 ms 212 KB Output is correct
17 Correct 4 ms 212 KB Output is correct
18 Correct 3 ms 212 KB Output is correct
19 Correct 3 ms 324 KB Output is correct
20 Correct 3 ms 212 KB Output is correct
21 Correct 4 ms 212 KB Output is correct
22 Correct 3 ms 212 KB Output is correct
23 Correct 2 ms 212 KB Output is correct
24 Correct 3 ms 212 KB Output is correct
25 Correct 3 ms 212 KB Output is correct
26 Correct 3 ms 212 KB Output is correct
27 Correct 3 ms 320 KB Output is correct
28 Correct 3 ms 212 KB Output is correct
29 Correct 3 ms 212 KB Output is correct
30 Correct 3 ms 212 KB Output is correct
31 Correct 3 ms 212 KB Output is correct
32 Correct 3 ms 212 KB Output is correct
33 Correct 3 ms 212 KB Output is correct
34 Correct 186 ms 356 KB Output is correct
35 Correct 195 ms 340 KB Output is correct
36 Correct 173 ms 340 KB Output is correct
37 Correct 162 ms 340 KB Output is correct
38 Correct 107 ms 340 KB Output is correct
39 Correct 128 ms 360 KB Output is correct
40 Correct 114 ms 340 KB Output is correct
41 Correct 112 ms 340 KB Output is correct
42 Correct 171 ms 340 KB Output is correct
43 Correct 142 ms 344 KB Output is correct
44 Correct 130 ms 344 KB Output is correct
45 Correct 130 ms 340 KB Output is correct
46 Correct 140 ms 344 KB Output is correct
47 Correct 142 ms 340 KB Output is correct
48 Correct 130 ms 364 KB Output is correct
49 Correct 102 ms 344 KB Output is correct
50 Correct 125 ms 340 KB Output is correct
51 Correct 137 ms 340 KB Output is correct
52 Correct 131 ms 340 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 260 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 4 ms 212 KB Output is correct
15 Correct 4 ms 212 KB Output is correct
16 Correct 4 ms 212 KB Output is correct
17 Correct 4 ms 212 KB Output is correct
18 Correct 3 ms 212 KB Output is correct
19 Correct 3 ms 324 KB Output is correct
20 Correct 3 ms 212 KB Output is correct
21 Correct 4 ms 212 KB Output is correct
22 Correct 3 ms 212 KB Output is correct
23 Correct 2 ms 212 KB Output is correct
24 Correct 3 ms 212 KB Output is correct
25 Correct 3 ms 212 KB Output is correct
26 Correct 3 ms 212 KB Output is correct
27 Correct 3 ms 320 KB Output is correct
28 Correct 3 ms 212 KB Output is correct
29 Correct 3 ms 212 KB Output is correct
30 Correct 3 ms 212 KB Output is correct
31 Correct 3 ms 212 KB Output is correct
32 Correct 3 ms 212 KB Output is correct
33 Correct 3 ms 212 KB Output is correct
34 Correct 186 ms 356 KB Output is correct
35 Correct 195 ms 340 KB Output is correct
36 Correct 173 ms 340 KB Output is correct
37 Correct 162 ms 340 KB Output is correct
38 Correct 107 ms 340 KB Output is correct
39 Correct 128 ms 360 KB Output is correct
40 Correct 114 ms 340 KB Output is correct
41 Correct 112 ms 340 KB Output is correct
42 Correct 171 ms 340 KB Output is correct
43 Correct 142 ms 344 KB Output is correct
44 Correct 130 ms 344 KB Output is correct
45 Correct 130 ms 340 KB Output is correct
46 Correct 140 ms 344 KB Output is correct
47 Correct 142 ms 340 KB Output is correct
48 Correct 130 ms 364 KB Output is correct
49 Correct 102 ms 344 KB Output is correct
50 Correct 125 ms 340 KB Output is correct
51 Correct 137 ms 340 KB Output is correct
52 Correct 131 ms 340 KB Output is correct
53 Incorrect 6 ms 868 KB Output isn't correct
54 Halted 0 ms 0 KB -