oj.uz

Submission #534749

# Submission time Handle Problem Language Result Execution time Memory
534749 2022-03-08T18:08:44 Z RaresFelix Monochrome Points (JOI20_monochrome) C++17
100 / 100
 45 ms 3400 KB 
#include <bits/stdc++.h>
#define MN 407171

using namespace std;
int n;
vector<int> P1, P2;
char C[MN];
using ll = long long;

ll re(int k) {
    ll r = 0;
    for(int i = 0; i < n; ++i) {
        int p1 = P1[i], p2 = P2[(i + k) % n];
        r += min(abs(p1 - p2) - 1, 2 * n - (abs(p1 - p2) + 1));
    }
    return r;
}

int main() {
    cin.tie(0)->sync_with_stdio(0);
    cin.exceptions(cin.failbit);
    cin >> n >> (C + 1);
    int bp = -1, ndif = INT_MAX;
    for(int i = 1; i <= 2 * n; ++i)
        (C[i] != C[1] ? P2 : P1).push_back(i);
    int st = 0, dr = 2 * n - 1, mij;
    while(st < dr) {
        mij = (st + dr + 1) >> 1;
        if(re(mij) < re(mij + 1)) st = mij;
        else dr = mij - 1;
    }
    ll rez = max({re(st), re((st - 1 + 2 * n) % (2 * n)), re((st + 1) % (2 * n))});
    cout << rez / 2 << "\n";
    return 0;
}

Compilation message

monochrome.cpp: In function 'int main()':
monochrome.cpp:23:9: warning: unused variable 'bp' [-Wunused-variable]
   23 |     int bp = -1, ndif = INT_MAX;
      |         ^~
monochrome.cpp:23:18: warning: unused variable 'ndif' [-Wunused-variable]
   23 |     int bp = -1, ndif = INT_MAX;
      |                  ^~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 328 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 324 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 328 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 324 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 328 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 324 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 0 ms 324 KB Output is correct
27 Correct 1 ms 320 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 332 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 328 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 324 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 328 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 324 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 0 ms 324 KB Output is correct
27 Correct 1 ms 320 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 324 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 324 KB Output is correct
41 Correct 1 ms 332 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 1 ms 332 KB Output is correct
45 Correct 1 ms 332 KB Output is correct
46 Correct 1 ms 332 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 1 ms 332 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 1 ms 332 KB Output is correct
52 Correct 1 ms 320 KB Output is correct

Subtask #4
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 328 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 324 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 328 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 324 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 0 ms 324 KB Output is correct
27 Correct 1 ms 320 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 324 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 324 KB Output is correct
41 Correct 1 ms 332 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 1 ms 332 KB Output is correct
45 Correct 1 ms 332 KB Output is correct
46 Correct 1 ms 332 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 1 ms 332 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 1 ms 332 KB Output is correct
52 Correct 1 ms 320 KB Output is correct
53 Correct 44 ms 2880 KB Output is correct
54 Correct 44 ms 2876 KB Output is correct
55 Correct 41 ms 2740 KB Output is correct
56 Correct 41 ms 2668 KB Output is correct
57 Correct 41 ms 2752 KB Output is correct
58 Correct 43 ms 2892 KB Output is correct
59 Correct 42 ms 2752 KB Output is correct
60 Correct 44 ms 2844 KB Output is correct
61 Correct 40 ms 2660 KB Output is correct
62 Correct 42 ms 2876 KB Output is correct
63 Correct 42 ms 2752 KB Output is correct
64 Correct 42 ms 3352 KB Output is correct
65 Correct 37 ms 2828 KB Output is correct
66 Correct 45 ms 3288 KB Output is correct
67 Correct 43 ms 3288 KB Output is correct
68 Correct 37 ms 3284 KB Output is correct
69 Correct 42 ms 3008 KB Output is correct
70 Correct 38 ms 2716 KB Output is correct
71 Correct 43 ms 3400 KB Output is correct
72 Correct 43 ms 3392 KB Output is correct
73 Correct 45 ms 2880 KB Output is correct