oj.uz

Submission #201408

# Submission time Handle Problem Language Result Execution time Memory
201408 2020-02-10T12:42:03 Z karma JJOOII 2 (JOI20_ho_t2) C++14
100 / 100
 16 ms 2948 KB 
#include <bits/stdc++.h>
#define pb          emplace_back
#define ll          long long
#define fi          first
#define se          second
#define mp          make_pair
//#define int         int64_t

using namespace std;

const int N = int(2e5) + 5;

typedef pair<int, int> pii;
string s;
int n, k, jump[N][3], cnt;

int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    #define Task        "test"
    if(fopen(Task".inp", "r")) {
        freopen(Task".inp", "r", stdin);
        freopen(Task".out", "w", stdout);
    }
    cin >> n >> k >> s;
    for(int i = 0, j = -1; i < n; ++i) {
        while(cnt < k && j + 1 < n) {
            ++j;
            if(s[j] == 'J') ++cnt;
        }
        if(cnt >= k) jump[i][0] = j;
        else jump[i][0] = n + n;
        if(s[i] == 'J') --cnt;
    } cnt = 0;
    for(int i = 0, j = -1; i < n; ++i) {
        while(cnt < k && j + 1 < n) {
            ++j;
            if(s[j] == 'O') ++cnt;
        }
        if(cnt >= k) jump[i][1] = j;
        else jump[i][1] = n + n;
        if(s[i] == 'O') --cnt;
    } cnt = 0;
    for(int i = 0, j = -1; i < n; ++i) {
        while(cnt < k && j + 1 < n) {
            ++j;
            if(s[j] == 'I') ++cnt;
        }
        if(cnt >= k) jump[i][2] = j;
        else jump[i][2] = n + n;
        if(s[i] == 'I') --cnt;
    }
    int ans = n + n;
    for(int i = 0, j; i < n; ++i) {
        j = jump[i][0];
        if(j >= n) continue;
        j = jump[j][1];
        if(j >= n) continue;
        j = jump[j][2];
        if(j >= n) continue;
        ans = min(ans, j - i + 1 - k * 3);
    }
    if(ans == n + n) ans = -1;
    cout << ans;
}

Compilation message

ho_t2.cpp: In function 'int32_t main()':
ho_t2.cpp:22:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen(Task".inp", "r", stdin);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
ho_t2.cpp:23:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen(Task".out", "w", stdout);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 280 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 5 ms 380 KB Output is correct
14 Correct 5 ms 376 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 280 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 5 ms 380 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 5 ms 376 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Correct 5 ms 376 KB Output is correct
19 Correct 5 ms 376 KB Output is correct
20 Correct 5 ms 376 KB Output is correct
21 Correct 5 ms 376 KB Output is correct
22 Correct 5 ms 376 KB Output is correct
23 Correct 5 ms 376 KB Output is correct
24 Correct 5 ms 376 KB Output is correct
25 Correct 5 ms 376 KB Output is correct
26 Correct 5 ms 376 KB Output is correct
27 Correct 5 ms 376 KB Output is correct
28 Correct 5 ms 376 KB Output is correct
29 Correct 5 ms 376 KB Output is correct
30 Correct 5 ms 376 KB Output is correct
31 Correct 5 ms 376 KB Output is correct
32 Correct 5 ms 376 KB Output is correct
33 Correct 5 ms 376 KB Output is correct
34 Correct 5 ms 376 KB Output is correct
35 Correct 5 ms 376 KB Output is correct

Subtask #3
87.0 / 87.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 280 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 5 ms 380 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 5 ms 376 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Correct 5 ms 376 KB Output is correct
19 Correct 5 ms 376 KB Output is correct
20 Correct 5 ms 376 KB Output is correct
21 Correct 5 ms 376 KB Output is correct
22 Correct 5 ms 376 KB Output is correct
23 Correct 5 ms 376 KB Output is correct
24 Correct 5 ms 376 KB Output is correct
25 Correct 5 ms 376 KB Output is correct
26 Correct 5 ms 376 KB Output is correct
27 Correct 5 ms 376 KB Output is correct
28 Correct 5 ms 376 KB Output is correct
29 Correct 5 ms 376 KB Output is correct
30 Correct 5 ms 376 KB Output is correct
31 Correct 5 ms 376 KB Output is correct
32 Correct 5 ms 376 KB Output is correct
33 Correct 5 ms 376 KB Output is correct
34 Correct 5 ms 376 KB Output is correct
35 Correct 5 ms 376 KB Output is correct
36 Correct 10 ms 2820 KB Output is correct
37 Correct 11 ms 2948 KB Output is correct
38 Correct 11 ms 2948 KB Output is correct
39 Correct 13 ms 2948 KB Output is correct
40 Correct 13 ms 2948 KB Output is correct
41 Correct 13 ms 2948 KB Output is correct
42 Correct 13 ms 2948 KB Output is correct
43 Correct 11 ms 2040 KB Output is correct
44 Correct 11 ms 2436 KB Output is correct
45 Correct 16 ms 2948 KB Output is correct
46 Correct 13 ms 2944 KB Output is correct
47 Correct 13 ms 2948 KB Output is correct
48 Correct 13 ms 2948 KB Output is correct
49 Correct 11 ms 2180 KB Output is correct
50 Correct 13 ms 2948 KB Output is correct
51 Correct 13 ms 2944 KB Output is correct
52 Correct 13 ms 2948 KB Output is correct
53 Correct 13 ms 2948 KB Output is correct
54 Correct 9 ms 2948 KB Output is correct
55 Correct 9 ms 2948 KB Output is correct
56 Correct 9 ms 2948 KB Output is correct