oj.uz

Submission #617245

# Submission time Handle Problem Language Result Execution time Memory
617245 2022-08-01T09:59:09 Z AmirElarbi Monochrome Points (JOI20_monochrome) C++14
35 / 100
 38 ms 4168 KB 
#include <bits/stdc++.h>
#define vi vector<int>
#define ve vector
#define ll long long
#define vf vector<float>
#define vll vector<pair<ll,ll>>
#define ii pair<int,int>
#define pll pair<ll,ll>
#define vvi vector<vi>
#define vii vector<ii>
#define gii greater<ii>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define INF 2e9+5
#define eps 1e-7
#define eps1 1e-25
#define optimise ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define MAX_A 1e5+5
#define V 450
using namespace std;
const int MOD = 1e9;
const int nax = 2e5+5;
const int lg = 20;
ll dp[nax];
int n;
vi blck, wht;
ll test(int md){
    if(dp[md] != -1) return dp[md];
    int res = 0;
    for (int j = 0; j < n; ++j)
    {
        int ind = (j+md)%n;
        int a = blck[j], b = wht[ind];
        if(a > b) swap(a,b);
        int bt = b-a-1;
        res += min(bt, 2*n-bt-2);
    }
    res /= 2;
    return dp[md] = res;
}
int main() {
    optimise;
    cin >> n;
    string s;
    cin >> s;
    memset(dp, -1, sizeof dp);
    for (int i = 0; i < n*2; ++i)
    {
        if(s[i] == 'B') blck.pb(i);
        if(s[i] == 'W') wht.pb(i);
    }
    ll mx = 0;
    int l = 0, r = n;
    while (l < r)
    {
        int md = (l+r)/2;
        ll a = test(md+1), b = test(md);
        if(a > b){
            mx = max(mx, a);
            l = md+1;
        } else {
            mx = max(mx, b);
            r = md;
        }
    }
    cout << mx << '\n';
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1876 KB Output is correct
2 Correct 1 ms 1876 KB Output is correct
3 Correct 1 ms 1876 KB Output is correct
4 Correct 2 ms 1876 KB Output is correct
5 Correct 1 ms 1876 KB Output is correct
6 Correct 2 ms 1876 KB Output is correct
7 Correct 1 ms 1876 KB Output is correct
8 Correct 1 ms 1876 KB Output is correct
9 Correct 1 ms 1876 KB Output is correct
10 Correct 1 ms 1876 KB Output is correct
11 Correct 2 ms 1920 KB Output is correct
12 Correct 2 ms 1876 KB Output is correct
13 Correct 1 ms 1876 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1876 KB Output is correct
2 Correct 1 ms 1876 KB Output is correct
3 Correct 1 ms 1876 KB Output is correct
4 Correct 2 ms 1876 KB Output is correct
5 Correct 1 ms 1876 KB Output is correct
6 Correct 2 ms 1876 KB Output is correct
7 Correct 1 ms 1876 KB Output is correct
8 Correct 1 ms 1876 KB Output is correct
9 Correct 1 ms 1876 KB Output is correct
10 Correct 1 ms 1876 KB Output is correct
11 Correct 2 ms 1920 KB Output is correct
12 Correct 2 ms 1876 KB Output is correct
13 Correct 1 ms 1876 KB Output is correct
14 Correct 1 ms 1876 KB Output is correct
15 Correct 1 ms 1876 KB Output is correct
16 Correct 2 ms 1876 KB Output is correct
17 Correct 1 ms 1876 KB Output is correct
18 Correct 1 ms 1876 KB Output is correct
19 Correct 1 ms 1876 KB Output is correct
20 Correct 1 ms 1876 KB Output is correct
21 Correct 1 ms 1876 KB Output is correct
22 Correct 1 ms 1876 KB Output is correct
23 Correct 1 ms 1876 KB Output is correct
24 Correct 1 ms 1876 KB Output is correct
25 Correct 1 ms 1876 KB Output is correct
26 Correct 1 ms 1876 KB Output is correct
27 Correct 1 ms 1876 KB Output is correct
28 Correct 2 ms 1876 KB Output is correct
29 Correct 1 ms 1876 KB Output is correct
30 Correct 1 ms 1876 KB Output is correct
31 Correct 1 ms 1876 KB Output is correct
32 Correct 1 ms 1876 KB Output is correct
33 Correct 2 ms 1876 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1876 KB Output is correct
2 Correct 1 ms 1876 KB Output is correct
3 Correct 1 ms 1876 KB Output is correct
4 Correct 2 ms 1876 KB Output is correct
5 Correct 1 ms 1876 KB Output is correct
6 Correct 2 ms 1876 KB Output is correct
7 Correct 1 ms 1876 KB Output is correct
8 Correct 1 ms 1876 KB Output is correct
9 Correct 1 ms 1876 KB Output is correct
10 Correct 1 ms 1876 KB Output is correct
11 Correct 2 ms 1920 KB Output is correct
12 Correct 2 ms 1876 KB Output is correct
13 Correct 1 ms 1876 KB Output is correct
14 Correct 1 ms 1876 KB Output is correct
15 Correct 1 ms 1876 KB Output is correct
16 Correct 2 ms 1876 KB Output is correct
17 Correct 1 ms 1876 KB Output is correct
18 Correct 1 ms 1876 KB Output is correct
19 Correct 1 ms 1876 KB Output is correct
20 Correct 1 ms 1876 KB Output is correct
21 Correct 1 ms 1876 KB Output is correct
22 Correct 1 ms 1876 KB Output is correct
23 Correct 1 ms 1876 KB Output is correct
24 Correct 1 ms 1876 KB Output is correct
25 Correct 1 ms 1876 KB Output is correct
26 Correct 1 ms 1876 KB Output is correct
27 Correct 1 ms 1876 KB Output is correct
28 Correct 2 ms 1876 KB Output is correct
29 Correct 1 ms 1876 KB Output is correct
30 Correct 1 ms 1876 KB Output is correct
31 Correct 1 ms 1876 KB Output is correct
32 Correct 1 ms 1876 KB Output is correct
33 Correct 2 ms 1876 KB Output is correct
34 Correct 2 ms 1876 KB Output is correct
35 Correct 1 ms 1876 KB Output is correct
36 Correct 1 ms 1876 KB Output is correct
37 Correct 1 ms 1876 KB Output is correct
38 Correct 1 ms 1876 KB Output is correct
39 Correct 1 ms 1876 KB Output is correct
40 Correct 1 ms 1876 KB Output is correct
41 Correct 1 ms 1876 KB Output is correct
42 Correct 3 ms 1876 KB Output is correct
43 Correct 1 ms 1876 KB Output is correct
44 Correct 1 ms 1876 KB Output is correct
45 Correct 1 ms 1876 KB Output is correct
46 Correct 1 ms 1876 KB Output is correct
47 Correct 2 ms 1876 KB Output is correct
48 Correct 1 ms 1876 KB Output is correct
49 Correct 1 ms 1876 KB Output is correct
50 Correct 1 ms 1876 KB Output is correct
51 Correct 1 ms 1876 KB Output is correct
52 Correct 1 ms 1876 KB Output is correct

Subtask #4
0.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1876 KB Output is correct
2 Correct 1 ms 1876 KB Output is correct
3 Correct 1 ms 1876 KB Output is correct
4 Correct 2 ms 1876 KB Output is correct
5 Correct 1 ms 1876 KB Output is correct
6 Correct 2 ms 1876 KB Output is correct
7 Correct 1 ms 1876 KB Output is correct
8 Correct 1 ms 1876 KB Output is correct
9 Correct 1 ms 1876 KB Output is correct
10 Correct 1 ms 1876 KB Output is correct
11 Correct 2 ms 1920 KB Output is correct
12 Correct 2 ms 1876 KB Output is correct
13 Correct 1 ms 1876 KB Output is correct
14 Correct 1 ms 1876 KB Output is correct
15 Correct 1 ms 1876 KB Output is correct
16 Correct 2 ms 1876 KB Output is correct
17 Correct 1 ms 1876 KB Output is correct
18 Correct 1 ms 1876 KB Output is correct
19 Correct 1 ms 1876 KB Output is correct
20 Correct 1 ms 1876 KB Output is correct
21 Correct 1 ms 1876 KB Output is correct
22 Correct 1 ms 1876 KB Output is correct
23 Correct 1 ms 1876 KB Output is correct
24 Correct 1 ms 1876 KB Output is correct
25 Correct 1 ms 1876 KB Output is correct
26 Correct 1 ms 1876 KB Output is correct
27 Correct 1 ms 1876 KB Output is correct
28 Correct 2 ms 1876 KB Output is correct
29 Correct 1 ms 1876 KB Output is correct
30 Correct 1 ms 1876 KB Output is correct
31 Correct 1 ms 1876 KB Output is correct
32 Correct 1 ms 1876 KB Output is correct
33 Correct 2 ms 1876 KB Output is correct
34 Correct 2 ms 1876 KB Output is correct
35 Correct 1 ms 1876 KB Output is correct
36 Correct 1 ms 1876 KB Output is correct
37 Correct 1 ms 1876 KB Output is correct
38 Correct 1 ms 1876 KB Output is correct
39 Correct 1 ms 1876 KB Output is correct
40 Correct 1 ms 1876 KB Output is correct
41 Correct 1 ms 1876 KB Output is correct
42 Correct 3 ms 1876 KB Output is correct
43 Correct 1 ms 1876 KB Output is correct
44 Correct 1 ms 1876 KB Output is correct
45 Correct 1 ms 1876 KB Output is correct
46 Correct 1 ms 1876 KB Output is correct
47 Correct 2 ms 1876 KB Output is correct
48 Correct 1 ms 1876 KB Output is correct
49 Correct 1 ms 1876 KB Output is correct
50 Correct 1 ms 1876 KB Output is correct
51 Correct 1 ms 1876 KB Output is correct
52 Correct 1 ms 1876 KB Output is correct
53 Incorrect 38 ms 4168 KB Output isn't correct
54 Halted 0 ms 0 KB -