oj.uz

Submission #212523

# Submission time Handle Problem Language Result Execution time Memory
212523 2020-03-23T11:36:25 Z DystoriaX JJOOII 2 (JOI20_ho_t2) C++14
100 / 100
 18 ms 2676 KB 
#include <bits/stdc++.h>

using namespace std;

int n, k;
char s[200010];
vector<int> J, O, I;
int lf[200010];
int ans = 1e9;

int main(){
    scanf("%d%d", &n, &k);
    scanf(" %s", s + 1);

    for(int i = 1; i <= n; i++){
        if(s[i] == 'J') J.emplace_back(i);
        if(s[i] == 'O') O.emplace_back(i);
        if(s[i] == 'I') I.emplace_back(i);
    }

    for(int i = k - 1; i < (int) J.size(); i++){
        lf[J[i]] = J[i - k + 1];
    }

    for(int i = k - 1; i < (int) O.size(); i++){
        auto it = upper_bound(J.begin(), J.end(), O[i - k + 1]);

        if(it == J.begin()) continue;
        --it;

        if(lf[*it] == 0) continue;
        lf[O[i]] = lf[*it];
    }

    for(int i = k - 1; i < (int) I.size(); i++){
        auto it = upper_bound(O.begin(), O.end(), I[i - k + 1]);
    
        if(it == O.begin()) continue;
        --it;

        if(lf[*it] == 0) continue;

        ans = min(ans, I[i] - lf[*it] + 1 - 3 * k);
    }

    if(ans == 1e9) ans = -1;

    printf("%d\n", ans);
    
    return 0;
}

Compilation message

ho_t2.cpp: In function 'int main()':
ho_t2.cpp:12:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &n, &k);
     ~~~~~^~~~~~~~~~~~~~~~
ho_t2.cpp:13:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf(" %s", s + 1);
     ~~~~~^~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 4 ms 384 KB Output is correct
10 Correct 4 ms 256 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 4 ms 384 KB Output is correct
10 Correct 4 ms 256 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 5 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 5 ms 384 KB Output is correct
27 Correct 5 ms 384 KB Output is correct
28 Correct 5 ms 512 KB Output is correct
29 Correct 5 ms 384 KB Output is correct
30 Correct 4 ms 384 KB Output is correct
31 Correct 5 ms 384 KB Output is correct
32 Correct 5 ms 384 KB Output is correct
33 Correct 6 ms 384 KB Output is correct
34 Correct 5 ms 384 KB Output is correct
35 Correct 4 ms 384 KB Output is correct

Subtask #3
87.0 / 87.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 4 ms 384 KB Output is correct
10 Correct 4 ms 256 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 5 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 5 ms 384 KB Output is correct
27 Correct 5 ms 384 KB Output is correct
28 Correct 5 ms 512 KB Output is correct
29 Correct 5 ms 384 KB Output is correct
30 Correct 4 ms 384 KB Output is correct
31 Correct 5 ms 384 KB Output is correct
32 Correct 5 ms 384 KB Output is correct
33 Correct 6 ms 384 KB Output is correct
34 Correct 5 ms 384 KB Output is correct
35 Correct 4 ms 384 KB Output is correct
36 Correct 15 ms 2300 KB Output is correct
37 Correct 18 ms 2676 KB Output is correct
38 Correct 16 ms 2416 KB Output is correct
39 Correct 18 ms 2420 KB Output is correct
40 Correct 14 ms 2160 KB Output is correct
41 Correct 15 ms 2288 KB Output is correct
42 Correct 16 ms 2676 KB Output is correct
43 Correct 10 ms 1660 KB Output is correct
44 Correct 11 ms 1788 KB Output is correct
45 Correct 14 ms 2156 KB Output is correct
46 Correct 18 ms 2152 KB Output is correct
47 Correct 14 ms 2420 KB Output is correct
48 Correct 13 ms 2288 KB Output is correct
49 Correct 10 ms 1660 KB Output is correct
50 Correct 14 ms 2160 KB Output is correct
51 Correct 15 ms 2160 KB Output is correct
52 Correct 10 ms 1636 KB Output is correct
53 Correct 10 ms 1916 KB Output is correct
54 Correct 11 ms 2168 KB Output is correct
55 Correct 8 ms 2040 KB Output is correct
56 Correct 7 ms 2040 KB Output is correct