oj.uz

Submission #720309

# Submission time Handle Problem Language Result Execution time Memory
720309 2023-04-07T23:07:56 Z thimote75 JJOOII 2 (JOI20_ho_t2) C++14
100 / 100
 56 ms 3176 KB 
#include <bits/stdc++.h>

using namespace std;

#define idata vector<int>

int N, K;
string buffer;

idata J, O, I;

void cumul (idata &s) {
    for (int i = 1; i < s.size(); i ++)
        s[i] += s[i - 1];
}

int bs (idata &u, int v) {
    int a = - 1;
    int b = u.size();

    while (b - a > 1) {
        int c = (a + b) >> 1;

        if (u[c] >= v) b = c;
        else a = c;
    }

    return b;
}

int getl (idata &v, int u) {
    u --; if (u == -1) return 0;
    return v[u];
}
int find (int l) {
    int j = bs(J, getl(J, l) + K);
    if (j == N) return N;
    int o = bs(O, getl(O, j) + K);
    if (o == N) return N;
    int i = bs(I, getl(I, o) + K);

    return i;
}

int main () {
    cin >> N >> K >> buffer;

    J.resize(N);
    O.resize(N);
    I.resize(N);

    for (int i = 0; i < N; i ++) {
        if (buffer[i] == 'J') J[i] ++;
        if (buffer[i] == 'O') O[i] ++;
        if (buffer[i] == 'I') I[i] ++;
    }

    cumul(J);
    cumul(O);
    cumul(I);

    int res = N + 2;
    for (int i = 0; i < N; i ++) {
        int n = find(i);
        if (n == N) continue ;

        res = min(res, n - i);
    }

    if (res != N + 2) res -= K * 3 - 1;
    else res = -1;

    cout << res << endl;
}

Compilation message

ho_t2.cpp: In function 'void cumul(std::vector<int>&)':
ho_t2.cpp:14:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |     for (int i = 1; i < s.size(); i ++)
      |                     ~~^~~~~~~~~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 304 KB Output is correct
4 Correct 0 ms 296 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 1 ms 296 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 296 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 296 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 304 KB Output is correct
4 Correct 0 ms 296 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 1 ms 296 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 296 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 296 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 300 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 2 ms 340 KB Output is correct
18 Correct 1 ms 296 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 296 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 296 KB Output is correct
30 Correct 1 ms 304 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 300 KB Output is correct
35 Correct 1 ms 340 KB Output is correct

Subtask #3
87.0 / 87.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 304 KB Output is correct
4 Correct 0 ms 296 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 1 ms 296 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 296 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 296 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 300 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 2 ms 340 KB Output is correct
18 Correct 1 ms 296 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 296 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 296 KB Output is correct
30 Correct 1 ms 304 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 300 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 49 ms 2916 KB Output is correct
37 Correct 56 ms 3172 KB Output is correct
38 Correct 55 ms 3172 KB Output is correct
39 Correct 55 ms 3040 KB Output is correct
40 Correct 48 ms 3172 KB Output is correct
41 Correct 48 ms 3172 KB Output is correct
42 Correct 52 ms 3172 KB Output is correct
43 Correct 21 ms 2084 KB Output is correct
44 Correct 29 ms 2564 KB Output is correct
45 Correct 39 ms 3172 KB Output is correct
46 Correct 39 ms 3168 KB Output is correct
47 Correct 37 ms 3176 KB Output is correct
48 Correct 35 ms 3172 KB Output is correct
49 Correct 24 ms 2148 KB Output is correct
50 Correct 38 ms 3060 KB Output is correct
51 Correct 35 ms 3144 KB Output is correct
52 Correct 23 ms 3072 KB Output is correct
53 Correct 27 ms 3172 KB Output is correct
54 Correct 34 ms 3172 KB Output is correct
55 Correct 23 ms 3172 KB Output is correct
56 Correct 20 ms 3172 KB Output is correct