oj.uz

Submission #1040785

# Submission time Handle Problem Language Result Execution time Memory
1040785 2024-08-01T09:15:52 Z Andrey Monochrome Points (JOI20_monochrome) C++14
100 / 100
 38 ms 9648 KB 
#include<bits/stdc++.h>
using namespace std;

vector<long long> pr(200010);
long long n;

void dude(long long l, long long r, long long x, long long c, bool yeah) {
    if(r < l) {
        return;
    }
    if(yeah) {
        l-=x;
        r-=x;
    }
    else {
        l = x-l;
        r = x-r;
        swap(l,r);
    }
    if(l < 0) {
        l+=n;
    }
    if(r < 0) {
        r+=n;
    }
    if(l <= r) {
        pr[l]+=c;
        pr[r+1]-=c;
    }
    else {
        pr[l]+=c;
        pr[n]-=c;
        pr[0]+=c;
        pr[r+1]-=c;
    }
}

void calc(bool yeah, vector<long long> p, vector<long long> q) {
    for(long long i = 1; i <= n; i++) {
        long long c = p[i];
        long long l = 0,r = n,p1,p2;
        while(l < r) {
            long long mid = (l+r+1)/2;
            if(q[mid] > c) {
                r = mid-1;
            }
            else {
                l = mid;
            }
        }
        p1 = l;
        if(c <= n) {
            l = 0;
            r = n;
            while(l < r) {
                long long mid = (l+r+1)/2;
                if(q[mid] > c+n) {
                    r = mid-1;
                }
                else {
                    l = mid;
                }
            }
            p2 = l;
            dude(1,p1,i,c,yeah);
            dude(p1+1,p2,i,-c,yeah);
            if(yeah) {
                dude(p2+1,n,i,2*n+c,yeah);
            }
            else {
                dude(p2+1,n,i,c,yeah);
            }
        }
        else {
            l = 0;
            r = n;
            while(l < r) {
                long long mid = (l+r+1)/2;
                if(q[mid] < c-n) {
                    l = mid;
                }
                else {
                    r = mid-1;
                }
            }
            p2 = l;
            if(yeah) {
                dude(1,p2,i,2*n-c,yeah);
            }
            else {
                dude(1,p2,i,-c,yeah);
            }
            dude(p2+1,p1,i,c,yeah);
            dude(p1+1,n,i,-c,yeah);
        }
    }
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    cin >> n;
    string s;
    cin >> s;
    vector<long long> p(1);
    vector<long long> q(1);
    for(long long i = 0; i < 2*n; i++) {
        if(s[i] == 'B') {
            p.push_back(i+1);
        }
        else {
            q.push_back(i+1);
        }
    }
    p.push_back(LLONG_MAX);
    q.push_back(LLONG_MAX);
    calc(1,p,q);
    calc(0,q,p);
    long long c = 0,ans = 0;
    for(long long i = 0; i < n; i++) {
        c+=pr[i];
        ans = max(ans,(c-n)/2);
    }
    cout << ans;
    return 0;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1884 KB Output is correct
2 Correct 1 ms 1884 KB Output is correct
3 Correct 1 ms 1884 KB Output is correct
4 Correct 1 ms 1884 KB Output is correct
5 Correct 1 ms 1884 KB Output is correct
6 Correct 1 ms 1884 KB Output is correct
7 Correct 0 ms 1884 KB Output is correct
8 Correct 1 ms 1884 KB Output is correct
9 Correct 1 ms 1884 KB Output is correct
10 Correct 1 ms 1884 KB Output is correct
11 Correct 1 ms 1884 KB Output is correct
12 Correct 1 ms 1884 KB Output is correct
13 Correct 1 ms 1884 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1884 KB Output is correct
2 Correct 1 ms 1884 KB Output is correct
3 Correct 1 ms 1884 KB Output is correct
4 Correct 1 ms 1884 KB Output is correct
5 Correct 1 ms 1884 KB Output is correct
6 Correct 1 ms 1884 KB Output is correct
7 Correct 0 ms 1884 KB Output is correct
8 Correct 1 ms 1884 KB Output is correct
9 Correct 1 ms 1884 KB Output is correct
10 Correct 1 ms 1884 KB Output is correct
11 Correct 1 ms 1884 KB Output is correct
12 Correct 1 ms 1884 KB Output is correct
13 Correct 1 ms 1884 KB Output is correct
14 Correct 1 ms 1884 KB Output is correct
15 Correct 1 ms 1884 KB Output is correct
16 Correct 1 ms 1884 KB Output is correct
17 Correct 1 ms 1884 KB Output is correct
18 Correct 1 ms 1884 KB Output is correct
19 Correct 1 ms 1884 KB Output is correct
20 Correct 1 ms 1884 KB Output is correct
21 Correct 1 ms 1884 KB Output is correct
22 Correct 1 ms 1884 KB Output is correct
23 Correct 1 ms 1900 KB Output is correct
24 Correct 1 ms 1884 KB Output is correct
25 Correct 1 ms 1884 KB Output is correct
26 Correct 1 ms 1884 KB Output is correct
27 Correct 1 ms 1884 KB Output is correct
28 Correct 1 ms 1884 KB Output is correct
29 Correct 1 ms 1884 KB Output is correct
30 Correct 1 ms 1884 KB Output is correct
31 Correct 1 ms 1884 KB Output is correct
32 Correct 1 ms 1884 KB Output is correct
33 Correct 1 ms 1884 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1884 KB Output is correct
2 Correct 1 ms 1884 KB Output is correct
3 Correct 1 ms 1884 KB Output is correct
4 Correct 1 ms 1884 KB Output is correct
5 Correct 1 ms 1884 KB Output is correct
6 Correct 1 ms 1884 KB Output is correct
7 Correct 0 ms 1884 KB Output is correct
8 Correct 1 ms 1884 KB Output is correct
9 Correct 1 ms 1884 KB Output is correct
10 Correct 1 ms 1884 KB Output is correct
11 Correct 1 ms 1884 KB Output is correct
12 Correct 1 ms 1884 KB Output is correct
13 Correct 1 ms 1884 KB Output is correct
14 Correct 1 ms 1884 KB Output is correct
15 Correct 1 ms 1884 KB Output is correct
16 Correct 1 ms 1884 KB Output is correct
17 Correct 1 ms 1884 KB Output is correct
18 Correct 1 ms 1884 KB Output is correct
19 Correct 1 ms 1884 KB Output is correct
20 Correct 1 ms 1884 KB Output is correct
21 Correct 1 ms 1884 KB Output is correct
22 Correct 1 ms 1884 KB Output is correct
23 Correct 1 ms 1900 KB Output is correct
24 Correct 1 ms 1884 KB Output is correct
25 Correct 1 ms 1884 KB Output is correct
26 Correct 1 ms 1884 KB Output is correct
27 Correct 1 ms 1884 KB Output is correct
28 Correct 1 ms 1884 KB Output is correct
29 Correct 1 ms 1884 KB Output is correct
30 Correct 1 ms 1884 KB Output is correct
31 Correct 1 ms 1884 KB Output is correct
32 Correct 1 ms 1884 KB Output is correct
33 Correct 1 ms 1884 KB Output is correct
34 Correct 2 ms 1884 KB Output is correct
35 Correct 1 ms 1884 KB Output is correct
36 Correct 1 ms 1884 KB Output is correct
37 Correct 1 ms 1884 KB Output is correct
38 Correct 1 ms 1884 KB Output is correct
39 Correct 1 ms 2008 KB Output is correct
40 Correct 1 ms 1884 KB Output is correct
41 Correct 1 ms 1944 KB Output is correct
42 Correct 1 ms 1884 KB Output is correct
43 Correct 1 ms 1884 KB Output is correct
44 Correct 1 ms 1884 KB Output is correct
45 Correct 1 ms 1884 KB Output is correct
46 Correct 1 ms 1884 KB Output is correct
47 Correct 1 ms 1884 KB Output is correct
48 Correct 1 ms 1884 KB Output is correct
49 Correct 1 ms 1884 KB Output is correct
50 Correct 1 ms 1884 KB Output is correct
51 Correct 1 ms 1884 KB Output is correct
52 Correct 1 ms 1884 KB Output is correct

Subtask #4
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1884 KB Output is correct
2 Correct 1 ms 1884 KB Output is correct
3 Correct 1 ms 1884 KB Output is correct
4 Correct 1 ms 1884 KB Output is correct
5 Correct 1 ms 1884 KB Output is correct
6 Correct 1 ms 1884 KB Output is correct
7 Correct 0 ms 1884 KB Output is correct
8 Correct 1 ms 1884 KB Output is correct
9 Correct 1 ms 1884 KB Output is correct
10 Correct 1 ms 1884 KB Output is correct
11 Correct 1 ms 1884 KB Output is correct
12 Correct 1 ms 1884 KB Output is correct
13 Correct 1 ms 1884 KB Output is correct
14 Correct 1 ms 1884 KB Output is correct
15 Correct 1 ms 1884 KB Output is correct
16 Correct 1 ms 1884 KB Output is correct
17 Correct 1 ms 1884 KB Output is correct
18 Correct 1 ms 1884 KB Output is correct
19 Correct 1 ms 1884 KB Output is correct
20 Correct 1 ms 1884 KB Output is correct
21 Correct 1 ms 1884 KB Output is correct
22 Correct 1 ms 1884 KB Output is correct
23 Correct 1 ms 1900 KB Output is correct
24 Correct 1 ms 1884 KB Output is correct
25 Correct 1 ms 1884 KB Output is correct
26 Correct 1 ms 1884 KB Output is correct
27 Correct 1 ms 1884 KB Output is correct
28 Correct 1 ms 1884 KB Output is correct
29 Correct 1 ms 1884 KB Output is correct
30 Correct 1 ms 1884 KB Output is correct
31 Correct 1 ms 1884 KB Output is correct
32 Correct 1 ms 1884 KB Output is correct
33 Correct 1 ms 1884 KB Output is correct
34 Correct 2 ms 1884 KB Output is correct
35 Correct 1 ms 1884 KB Output is correct
36 Correct 1 ms 1884 KB Output is correct
37 Correct 1 ms 1884 KB Output is correct
38 Correct 1 ms 1884 KB Output is correct
39 Correct 1 ms 2008 KB Output is correct
40 Correct 1 ms 1884 KB Output is correct
41 Correct 1 ms 1944 KB Output is correct
42 Correct 1 ms 1884 KB Output is correct
43 Correct 1 ms 1884 KB Output is correct
44 Correct 1 ms 1884 KB Output is correct
45 Correct 1 ms 1884 KB Output is correct
46 Correct 1 ms 1884 KB Output is correct
47 Correct 1 ms 1884 KB Output is correct
48 Correct 1 ms 1884 KB Output is correct
49 Correct 1 ms 1884 KB Output is correct
50 Correct 1 ms 1884 KB Output is correct
51 Correct 1 ms 1884 KB Output is correct
52 Correct 1 ms 1884 KB Output is correct
53 Correct 36 ms 9648 KB Output is correct
54 Correct 36 ms 9436 KB Output is correct
55 Correct 36 ms 8920 KB Output is correct
56 Correct 34 ms 9176 KB Output is correct
57 Correct 26 ms 8832 KB Output is correct
58 Correct 22 ms 9060 KB Output is correct
59 Correct 19 ms 8924 KB Output is correct
60 Correct 27 ms 9120 KB Output is correct
61 Correct 29 ms 8896 KB Output is correct
62 Correct 26 ms 9144 KB Output is correct
63 Correct 33 ms 9176 KB Output is correct
64 Correct 27 ms 8808 KB Output is correct
65 Correct 34 ms 8612 KB Output is correct
66 Correct 27 ms 8796 KB Output is correct
67 Correct 28 ms 8808 KB Output is correct
68 Correct 27 ms 8296 KB Output is correct
69 Correct 22 ms 9056 KB Output is correct
70 Correct 22 ms 8580 KB Output is correct
71 Correct 26 ms 9060 KB Output is correct
72 Correct 33 ms 9064 KB Output is correct
73 Correct 38 ms 9436 KB Output is correct