oj.uz

Submission #1095896

# Submission time Handle Problem Language Result Execution time Memory
1095896 2024-10-03T11:27:51 Z _8_8_ Monochrome Points (JOI20_monochrome) C++17
35 / 100
 2000 ms 11852 KB 
#include <bits/stdc++.h>
    
using namespace std;
    
typedef long long ll;
const int  N = 3e5 + 12, MOD = (int)1e9 + 7;

int n, t[N * 2];
string s;
vector<int> x, y;

void add(int i, int val) {
    while(i <= n + n) {
        t[i] += val;
        i += i & -i;
    }
}
ll get(int i) {
    ll ret = 0;
    while(i) {
        ret += t[i];
        i -= i & -i;
    }
    return ret;
}
ll get(int l, int r) {
    return get(r) - get(l - 1);
}
ll calc(int k) {
    for(int i = 1; i <= n + n; i++) {
        t[i] = 0;
    }
    ll ret = 0;
    vector<pair<int,int>> a;
    for(int i = 0; i < n; i++) {
        int j = (i + k) % n;
        int l = x[i], r = y[j];
        if(l > r) {
            swap(l, r);
        }
        a.emplace_back(l, -1);
        a.emplace_back(r, l);
    }
    // return 0;
    sort(a.begin(), a.end());
    for(auto [x, y]:a) {
        if(y == -1) {
            add(x, 1); 
        } else {
            ret += get(y + 1, x);
            add(y, -1);
        }
    }
    return ret;
}
void test() {
    cin >> n >> s;
    for(int i = 0; i < n + n; i++) {
        if(s[i] == 'W') {
            x.push_back(i + 1);
        } else {
            y.push_back(i + 1);
        }
    }
    ll res = 0;
    for(int i = 0; i < n; i++) {
        // cout << i << ' ' << calc(i) << '\n';
        res = max(res, calc(i));
    }
    cout << res << '\n';
}
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0); 

    int t = 1; 
    // cin >> t;
    
    while(t--) 
        test();
    return 0;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 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 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 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 7 ms 348 KB Output is correct
15 Correct 7 ms 488 KB Output is correct
16 Correct 7 ms 600 KB Output is correct
17 Correct 11 ms 344 KB Output is correct
18 Correct 6 ms 348 KB Output is correct
19 Correct 7 ms 348 KB Output is correct
20 Correct 5 ms 348 KB Output is correct
21 Correct 6 ms 488 KB Output is correct
22 Correct 5 ms 348 KB Output is correct
23 Correct 3 ms 348 KB Output is correct
24 Correct 5 ms 484 KB Output is correct
25 Correct 4 ms 348 KB Output is correct
26 Correct 6 ms 348 KB Output is correct
27 Correct 8 ms 484 KB Output is correct
28 Correct 6 ms 344 KB Output is correct
29 Correct 6 ms 348 KB Output is correct
30 Correct 5 ms 348 KB Output is correct
31 Correct 6 ms 348 KB Output is correct
32 Correct 6 ms 348 KB Output is correct
33 Correct 6 ms 348 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 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 7 ms 348 KB Output is correct
15 Correct 7 ms 488 KB Output is correct
16 Correct 7 ms 600 KB Output is correct
17 Correct 11 ms 344 KB Output is correct
18 Correct 6 ms 348 KB Output is correct
19 Correct 7 ms 348 KB Output is correct
20 Correct 5 ms 348 KB Output is correct
21 Correct 6 ms 488 KB Output is correct
22 Correct 5 ms 348 KB Output is correct
23 Correct 3 ms 348 KB Output is correct
24 Correct 5 ms 484 KB Output is correct
25 Correct 4 ms 348 KB Output is correct
26 Correct 6 ms 348 KB Output is correct
27 Correct 8 ms 484 KB Output is correct
28 Correct 6 ms 344 KB Output is correct
29 Correct 6 ms 348 KB Output is correct
30 Correct 5 ms 348 KB Output is correct
31 Correct 6 ms 348 KB Output is correct
32 Correct 6 ms 348 KB Output is correct
33 Correct 6 ms 348 KB Output is correct
34 Correct 365 ms 344 KB Output is correct
35 Correct 362 ms 548 KB Output is correct
36 Correct 325 ms 344 KB Output is correct
37 Correct 321 ms 344 KB Output is correct
38 Correct 256 ms 360 KB Output is correct
39 Correct 292 ms 348 KB Output is correct
40 Correct 224 ms 540 KB Output is correct
41 Correct 233 ms 596 KB Output is correct
42 Correct 335 ms 548 KB Output is correct
43 Correct 329 ms 344 KB Output is correct
44 Correct 271 ms 344 KB Output is correct
45 Correct 303 ms 344 KB Output is correct
46 Correct 324 ms 344 KB Output is correct
47 Correct 326 ms 544 KB Output is correct
48 Correct 337 ms 348 KB Output is correct
49 Correct 250 ms 596 KB Output is correct
50 Correct 293 ms 544 KB Output is correct
51 Correct 288 ms 540 KB Output is correct
52 Correct 268 ms 348 KB Output is correct

Subtask #4
0.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 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 7 ms 348 KB Output is correct
15 Correct 7 ms 488 KB Output is correct
16 Correct 7 ms 600 KB Output is correct
17 Correct 11 ms 344 KB Output is correct
18 Correct 6 ms 348 KB Output is correct
19 Correct 7 ms 348 KB Output is correct
20 Correct 5 ms 348 KB Output is correct
21 Correct 6 ms 488 KB Output is correct
22 Correct 5 ms 348 KB Output is correct
23 Correct 3 ms 348 KB Output is correct
24 Correct 5 ms 484 KB Output is correct
25 Correct 4 ms 348 KB Output is correct
26 Correct 6 ms 348 KB Output is correct
27 Correct 8 ms 484 KB Output is correct
28 Correct 6 ms 344 KB Output is correct
29 Correct 6 ms 348 KB Output is correct
30 Correct 5 ms 348 KB Output is correct
31 Correct 6 ms 348 KB Output is correct
32 Correct 6 ms 348 KB Output is correct
33 Correct 6 ms 348 KB Output is correct
34 Correct 365 ms 344 KB Output is correct
35 Correct 362 ms 548 KB Output is correct
36 Correct 325 ms 344 KB Output is correct
37 Correct 321 ms 344 KB Output is correct
38 Correct 256 ms 360 KB Output is correct
39 Correct 292 ms 348 KB Output is correct
40 Correct 224 ms 540 KB Output is correct
41 Correct 233 ms 596 KB Output is correct
42 Correct 335 ms 548 KB Output is correct
43 Correct 329 ms 344 KB Output is correct
44 Correct 271 ms 344 KB Output is correct
45 Correct 303 ms 344 KB Output is correct
46 Correct 324 ms 344 KB Output is correct
47 Correct 326 ms 544 KB Output is correct
48 Correct 337 ms 348 KB Output is correct
49 Correct 250 ms 596 KB Output is correct
50 Correct 293 ms 544 KB Output is correct
51 Correct 288 ms 540 KB Output is correct
52 Correct 268 ms 348 KB Output is correct
53 Execution timed out 2041 ms 11852 KB Time limit exceeded
54 Halted 0 ms 0 KB -