oj.uz

Submission #1088932

# Submission time Handle Problem Language Result Execution time Memory
1088932 2024-09-15T14:50:31 Z Wansur Monochrome Points (JOI20_monochrome) C++14
100 / 100
 567 ms 5528 KB 
#include <bits/stdc++.h>
#define ent '\n'
//#define int long long

using namespace std;
typedef long long ll;
const int maxn = 2e5 + 12;

int t[maxn * 2], r[maxn * 2];
int a[maxn], b[maxn];
int n, m, k;

void upd(int i, int x){
    for(; i <= n * 2;i |= (i + 1)){
        t[i] += x;
    }
}

int GET(int i){
    int ans = 0;
    for(; i > 0; i = (i & (i + 1)) - 1){
        ans += t[i];
    }
    return ans;
}

int get(int l, int r){
    return GET(r) - GET(l - 1);
}

ll get(int k){
    for(int i=1;i<=n*2;i++){
        t[i] = r[i] = 0;
    }
    vector<pair<int, int>> v;
    for(int i=0;i<n;i++){
        r[min(a[i], b[(i + k) % n])] = max(a[i], b[(i + k) % n]);
    }
    ll ans = 0;
    for(int i=1;i<=2 * n;i++){
        if(!r[i]) continue;
        ans += get(i, r[i]);
        upd(r[i], 1);
    }
    return ans;
}

void solve(){
    cin >> n;
    int l = 0, r = 0;
    ll ans = 0;
    for(int i=1;i<=2*n;i++){
        char c;
        cin >> c;
        if(c == 'W') a[l++] = i;
        else b[r++] = i;
    }
    l = 1, r = n;
    while(r - l > 3){
        int m1 = l + (r - l) / 3, m2 = r - (r - l) / 3;
        ll x = get(m1), y = get(m2);
        ans = max({ans, x, y});
        if(x < y) l = m1;
        else r = m2;
    }
    for(int i=l;i<=r;i++){
        ans = max(ans, get(i));
    }
    cout << ans << ent;
}

int32_t main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int t = 1;
//    cin >> t;
    while(t--){
        solve();
    }
}

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 1 ms 348 KB Output is correct
8 Correct 0 ms 468 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 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 348 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 1 ms 348 KB Output is correct
8 Correct 0 ms 468 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 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 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 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 1 ms 348 KB Output is correct
8 Correct 0 ms 468 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 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 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 4 ms 344 KB Output is correct
35 Correct 4 ms 468 KB Output is correct
36 Correct 3 ms 348 KB Output is correct
37 Correct 3 ms 348 KB Output is correct
38 Correct 2 ms 348 KB Output is correct
39 Correct 2 ms 348 KB Output is correct
40 Correct 2 ms 348 KB Output is correct
41 Correct 2 ms 348 KB Output is correct
42 Correct 3 ms 348 KB Output is correct
43 Correct 3 ms 348 KB Output is correct
44 Correct 3 ms 348 KB Output is correct
45 Correct 2 ms 348 KB Output is correct
46 Correct 2 ms 460 KB Output is correct
47 Correct 2 ms 348 KB Output is correct
48 Correct 2 ms 464 KB Output is correct
49 Correct 2 ms 348 KB Output is correct
50 Correct 2 ms 348 KB Output is correct
51 Correct 2 ms 532 KB Output is correct
52 Correct 3 ms 348 KB Output is correct

Subtask #4
65.0 / 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 1 ms 348 KB Output is correct
8 Correct 0 ms 468 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 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 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 4 ms 344 KB Output is correct
35 Correct 4 ms 468 KB Output is correct
36 Correct 3 ms 348 KB Output is correct
37 Correct 3 ms 348 KB Output is correct
38 Correct 2 ms 348 KB Output is correct
39 Correct 2 ms 348 KB Output is correct
40 Correct 2 ms 348 KB Output is correct
41 Correct 2 ms 348 KB Output is correct
42 Correct 3 ms 348 KB Output is correct
43 Correct 3 ms 348 KB Output is correct
44 Correct 3 ms 348 KB Output is correct
45 Correct 2 ms 348 KB Output is correct
46 Correct 2 ms 460 KB Output is correct
47 Correct 2 ms 348 KB Output is correct
48 Correct 2 ms 464 KB Output is correct
49 Correct 2 ms 348 KB Output is correct
50 Correct 2 ms 348 KB Output is correct
51 Correct 2 ms 532 KB Output is correct
52 Correct 3 ms 348 KB Output is correct
53 Correct 565 ms 5528 KB Output is correct
54 Correct 567 ms 5468 KB Output is correct
55 Correct 506 ms 5292 KB Output is correct
56 Correct 529 ms 5252 KB Output is correct
57 Correct 440 ms 5400 KB Output is correct
58 Correct 458 ms 5528 KB Output is correct
59 Correct 426 ms 5164 KB Output is correct
60 Correct 448 ms 5456 KB Output is correct
61 Correct 462 ms 5404 KB Output is correct
62 Correct 464 ms 5468 KB Output is correct
63 Correct 461 ms 5208 KB Output is correct
64 Correct 445 ms 5212 KB Output is correct
65 Correct 484 ms 4956 KB Output is correct
66 Correct 432 ms 5212 KB Output is correct
67 Correct 445 ms 5212 KB Output is correct
68 Correct 413 ms 4952 KB Output is correct
69 Correct 449 ms 5500 KB Output is correct
70 Correct 363 ms 5208 KB Output is correct
71 Correct 434 ms 5468 KB Output is correct
72 Correct 439 ms 5520 KB Output is correct
73 Correct 480 ms 5468 KB Output is correct