답안 #201034

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
201034	2020-02-09T06:38:53 Z	HellAngel	JJOOII 2 (JOI20_ho_t2)	C++14	100 / 100	94 ms	48516 KB

ho_t2

#include <bits/stdc++.h>

using namespace std;

const int maxn = 200007;
string s;
int nxt[20][maxn][3], a[maxn], n, k, ans;

void Jump(int &pos, int type, int cnt)
{
    for(int i = 19; i >= 0; i--)
    {
        if(cnt >= (1 << i))
        {
            cnt -= (1 << i);
            pos = nxt[i][pos][type];
        }
    }
}

int32_t main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    if(fopen("test.inp", "r")) freopen("test.inp", "r", stdin);
    cin >> n >> k >> s;
    ans = n + 1;
    for(int i = 1; i <= n; i++)
    {
        if(s[i - 1] == 'J') a[i] = 0;
        if(s[i - 1] == 'O') a[i] = 1;
        if(s[i - 1] == 'I') a[i] = 2;
    }
    nxt[0][n + 1][0] = nxt[0][n + 1][1] = nxt[0][n + 1][2] = n + 1; 
    for(int i = n; i >= 1; i--)
    {
        for(int j = 0; j < 3; j++) nxt[0][i][j] = nxt[0][i + 1][j]; 
        if(i == n) continue;
        nxt[0][i][a[i + 1]] = i + 1;
    }
    for(int len = 1; len < 20; len++)
    {
        for(int i = 1; i <= n + 1; i++)
        {
            for(int j = 0; j < 3; j++)
            {
                int nlen = (1 << len);
                if(i + nlen - 1 > n) nxt[len][i][j] = 1 + n;
                nxt[len][i][j] = nxt[len - 1][nxt[len - 1][i][j]][j];
            }
        }
    }
    for(int i = 1; i <= n; i++)
    {
        int cur = i;
        if(a[cur] != 0) continue;
        Jump(cur, 0, k - 1);
        Jump(cur, 1, k);
        Jump(cur, 2, k);
        if(cur <= n)
        {
            ans = min(ans, cur - i + 1 - k * 3);
        }
    }
    if(ans == n + 1) cout << -1;
    else cout << ans;
}

Compilation message

ho_t2.cpp: In function 'int32_t main()':
ho_t2.cpp:25:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     if(fopen("test.inp", "r")) freopen("test.inp", "r", stdin);
                                ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	504 KB	Output is correct
2	Correct	5 ms	504 KB	Output is correct
3	Correct	5 ms	504 KB	Output is correct
4	Correct	5 ms	504 KB	Output is correct
5	Correct	5 ms	504 KB	Output is correct
6	Correct	5 ms	504 KB	Output is correct
7	Correct	5 ms	504 KB	Output is correct
8	Correct	5 ms	504 KB	Output is correct
9	Correct	5 ms	504 KB	Output is correct
10	Correct	5 ms	504 KB	Output is correct
11	Correct	5 ms	504 KB	Output is correct
12	Correct	5 ms	504 KB	Output is correct
13	Correct	5 ms	504 KB	Output is correct
14	Correct	5 ms	504 KB	Output is correct

Subtask #2
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	504 KB	Output is correct
2	Correct	5 ms	504 KB	Output is correct
3	Correct	5 ms	504 KB	Output is correct
4	Correct	5 ms	504 KB	Output is correct
5	Correct	5 ms	504 KB	Output is correct
6	Correct	5 ms	504 KB	Output is correct
7	Correct	5 ms	504 KB	Output is correct
8	Correct	5 ms	504 KB	Output is correct
9	Correct	5 ms	504 KB	Output is correct
10	Correct	5 ms	504 KB	Output is correct
11	Correct	5 ms	504 KB	Output is correct
12	Correct	5 ms	504 KB	Output is correct
13	Correct	5 ms	504 KB	Output is correct
14	Correct	5 ms	504 KB	Output is correct
15	Correct	5 ms	1144 KB	Output is correct
16	Correct	6 ms	1144 KB	Output is correct
17	Correct	6 ms	1272 KB	Output is correct
18	Correct	5 ms	888 KB	Output is correct
19	Correct	5 ms	1144 KB	Output is correct
20	Correct	6 ms	1144 KB	Output is correct
21	Correct	6 ms	1144 KB	Output is correct
22	Correct	5 ms	1144 KB	Output is correct
23	Correct	5 ms	888 KB	Output is correct
24	Correct	5 ms	1144 KB	Output is correct
25	Correct	6 ms	1148 KB	Output is correct
26	Correct	5 ms	1276 KB	Output is correct
27	Correct	5 ms	1144 KB	Output is correct
28	Correct	6 ms	1272 KB	Output is correct
29	Correct	8 ms	1272 KB	Output is correct
30	Correct	5 ms	1144 KB	Output is correct
31	Correct	5 ms	760 KB	Output is correct
32	Correct	5 ms	1148 KB	Output is correct
33	Correct	6 ms	1272 KB	Output is correct
34	Correct	6 ms	1144 KB	Output is correct
35	Correct	5 ms	1144 KB	Output is correct

Subtask #3
87.0 / 87.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	504 KB	Output is correct
2	Correct	5 ms	504 KB	Output is correct
3	Correct	5 ms	504 KB	Output is correct
4	Correct	5 ms	504 KB	Output is correct
5	Correct	5 ms	504 KB	Output is correct
6	Correct	5 ms	504 KB	Output is correct
7	Correct	5 ms	504 KB	Output is correct
8	Correct	5 ms	504 KB	Output is correct
9	Correct	5 ms	504 KB	Output is correct
10	Correct	5 ms	504 KB	Output is correct
11	Correct	5 ms	504 KB	Output is correct
12	Correct	5 ms	504 KB	Output is correct
13	Correct	5 ms	504 KB	Output is correct
14	Correct	5 ms	504 KB	Output is correct
15	Correct	5 ms	1144 KB	Output is correct
16	Correct	6 ms	1144 KB	Output is correct
17	Correct	6 ms	1272 KB	Output is correct
18	Correct	5 ms	888 KB	Output is correct
19	Correct	5 ms	1144 KB	Output is correct
20	Correct	6 ms	1144 KB	Output is correct
21	Correct	6 ms	1144 KB	Output is correct
22	Correct	5 ms	1144 KB	Output is correct
23	Correct	5 ms	888 KB	Output is correct
24	Correct	5 ms	1144 KB	Output is correct
25	Correct	6 ms	1148 KB	Output is correct
26	Correct	5 ms	1276 KB	Output is correct
27	Correct	5 ms	1144 KB	Output is correct
28	Correct	6 ms	1272 KB	Output is correct
29	Correct	8 ms	1272 KB	Output is correct
30	Correct	5 ms	1144 KB	Output is correct
31	Correct	5 ms	760 KB	Output is correct
32	Correct	5 ms	1148 KB	Output is correct
33	Correct	6 ms	1272 KB	Output is correct
34	Correct	6 ms	1144 KB	Output is correct
35	Correct	5 ms	1144 KB	Output is correct
36	Correct	54 ms	45316 KB	Output is correct
37	Correct	54 ms	48388 KB	Output is correct
38	Correct	54 ms	48388 KB	Output is correct
39	Correct	54 ms	48004 KB	Output is correct
40	Correct	55 ms	48388 KB	Output is correct
41	Correct	56 ms	48388 KB	Output is correct
42	Correct	54 ms	48388 KB	Output is correct
43	Correct	35 ms	30328 KB	Output is correct
44	Correct	41 ms	37636 KB	Output is correct
45	Correct	54 ms	48388 KB	Output is correct
46	Correct	55 ms	48388 KB	Output is correct
47	Correct	56 ms	48388 KB	Output is correct
48	Correct	56 ms	48516 KB	Output is correct
49	Correct	38 ms	32516 KB	Output is correct
50	Correct	55 ms	48384 KB	Output is correct
51	Correct	94 ms	48388 KB	Output is correct
52	Correct	53 ms	46596 KB	Output is correct
53	Correct	57 ms	48388 KB	Output is correct
54	Correct	54 ms	48388 KB	Output is correct
55	Correct	52 ms	48388 KB	Output is correct
56	Correct	54 ms	48388 KB	Output is correct

답안 #201034

Compilation message

Subtask #1 1.0 / 1.0

Subtask #2 12.0 / 12.0

Subtask #3 87.0 / 87.0

Subtask #1
1.0 / 1.0

Subtask #2
12.0 / 12.0

Subtask #3
87.0 / 87.0