Submission #732041

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
732041	2023-04-28T09:41:58 Z	alextodoran	Radio Towers (IOI22_towers)	C++17	37 / 100	4000 ms	19400 KB

towers

/**
 _  _   __  _ _ _  _  _ _
 |a  ||t  ||o    d | |o  |
| __    _| | _ | __|  _ |
| __ |/_  | __  /__\ / _\|

**/

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int N_MAX = 100000;
const int E_MAX = 17;

int N;
int H[N_MAX];

int rmx[N_MAX][E_MAX];
int rmn[N_MAX][E_MAX];

int fmx (int i, int j) {
    return (H[i] >= H[j] ? i : j);
}
int fmn (int i, int j) {
    return (H[i] <= H[j] ? i : j);
}

int getmx (int l, int r) {
    int e = 31 - __builtin_clz(r - l + 1);
    return fmx(rmx[l][e], rmx[r - (1 << e) + 1][e]);
}
int getmn (int l, int r) {
    int e = 31 - __builtin_clz(r - l + 1);
    return fmn(rmn[l][e], rmn[r - (1 << e) + 1][e]);
}

int pref[N_MAX];

void init (int _N, vector <int> _H) {
    N = _N;
    for (int i = 0; i < N; i++) {
        H[i] = _H[i];
        rmx[i][0] = rmn[i][0] = i;
    }
    for (int e = 1; e < E_MAX; e++) {
        for (int i = 0; i + (1 << e) - 1 < N; i++) {
            rmx[i][e] = fmx(rmx[i][e - 1], rmx[i + (1 << (e - 1))][e - 1]);
            rmn[i][e] = fmn(rmn[i][e - 1], rmn[i + (1 << (e - 1))][e - 1]);
        }
    }
    for (int i = 1; i < N - 1; i++) {
        pref[i] = ((H[i - 1] < H[i] && H[i] < H[i + 1])
                || (H[i - 1] > H[i] && H[i] > H[i + 1]));
    }
    for (int i = 1; i < N; i++) {
        pref[i] += pref[i - 1];
    }
}

int max_towers (int L, int R, int D) {
    if (L > R) {
        return 0;
    }
    if (L == R) {
        return 1;
    }
    if (D == 1) {
        return ((R - L + 1) - (pref[R - 1] - pref[L]) - (H[L] > H[L + 1]) - (H[R] > H[R - 1]) + 1) / 2;
    }
    int K = getmx(L, R);
    int mxtL = max_towers(L, K - 1, D);
    int mxtR = max_towers(K + 1, R, D);
    return (H[getmn(L, K)] <= H[K] - D && H[getmn(K, R)] <= H[K] - D ? mxtL + mxtR : max(mxtL, mxtR));
}

Subtask #1
0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Execution timed out	4072 ms	11324 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-

Subtask #2
11.0 / 11.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	336 KB	Output is correct
2	Correct	1 ms	592 KB	Output is correct
3	Correct	1 ms	592 KB	Output is correct
4	Correct	1 ms	592 KB	Output is correct
5	Correct	1 ms	592 KB	Output is correct
6	Correct	1 ms	592 KB	Output is correct
7	Correct	1 ms	592 KB	Output is correct
8	Correct	1 ms	592 KB	Output is correct
9	Correct	1 ms	592 KB	Output is correct
10	Correct	1 ms	592 KB	Output is correct
11	Correct	1 ms	592 KB	Output is correct
12	Correct	0 ms	208 KB	Output is correct
13	Correct	1 ms	592 KB	Output is correct
14	Correct	1 ms	592 KB	Output is correct
15	Correct	1 ms	592 KB	Output is correct
16	Correct	1 ms	592 KB	Output is correct
17	Correct	1 ms	592 KB	Output is correct
18	Correct	1 ms	592 KB	Output is correct
19	Correct	1 ms	592 KB	Output is correct
20	Correct	1 ms	592 KB	Output is correct
21	Correct	1 ms	592 KB	Output is correct
22	Correct	1 ms	592 KB	Output is correct
23	Correct	1 ms	592 KB	Output is correct
24	Correct	1 ms	592 KB	Output is correct
25	Correct	0 ms	336 KB	Output is correct
26	Correct	1 ms	592 KB	Output is correct
27	Correct	1 ms	592 KB	Output is correct
28	Correct	1 ms	592 KB	Output is correct
29	Correct	1 ms	592 KB	Output is correct
30	Correct	1 ms	592 KB	Output is correct
31	Correct	1 ms	592 KB	Output is correct
32	Correct	1 ms	592 KB	Output is correct
33	Correct	1 ms	592 KB	Output is correct
34	Correct	1 ms	592 KB	Output is correct
35	Correct	1 ms	592 KB	Output is correct

Subtask #3
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	336 KB	Output is correct
2	Correct	1 ms	592 KB	Output is correct
3	Correct	1 ms	592 KB	Output is correct
4	Correct	1 ms	592 KB	Output is correct
5	Correct	1 ms	592 KB	Output is correct
6	Correct	1 ms	592 KB	Output is correct
7	Correct	1 ms	592 KB	Output is correct
8	Correct	1 ms	592 KB	Output is correct
9	Correct	1 ms	592 KB	Output is correct
10	Correct	1 ms	592 KB	Output is correct
11	Correct	1 ms	592 KB	Output is correct
12	Correct	0 ms	208 KB	Output is correct
13	Correct	1 ms	592 KB	Output is correct
14	Correct	1 ms	592 KB	Output is correct
15	Correct	1 ms	592 KB	Output is correct
16	Correct	1 ms	592 KB	Output is correct
17	Correct	1 ms	592 KB	Output is correct
18	Correct	1 ms	592 KB	Output is correct
19	Correct	1 ms	592 KB	Output is correct
20	Correct	1 ms	592 KB	Output is correct
21	Correct	1 ms	592 KB	Output is correct
22	Correct	1 ms	592 KB	Output is correct
23	Correct	1 ms	592 KB	Output is correct
24	Correct	1 ms	592 KB	Output is correct
25	Correct	0 ms	336 KB	Output is correct
26	Correct	1 ms	592 KB	Output is correct
27	Correct	1 ms	592 KB	Output is correct
28	Correct	1 ms	592 KB	Output is correct
29	Correct	1 ms	592 KB	Output is correct
30	Correct	1 ms	592 KB	Output is correct
31	Correct	1 ms	592 KB	Output is correct
32	Correct	1 ms	592 KB	Output is correct
33	Correct	1 ms	592 KB	Output is correct
34	Correct	1 ms	592 KB	Output is correct
35	Correct	1 ms	592 KB	Output is correct
36	Correct	19 ms	9872 KB	Output is correct
37	Correct	34 ms	15160 KB	Output is correct
38	Correct	39 ms	15040 KB	Output is correct
39	Correct	33 ms	15092 KB	Output is correct
40	Correct	32 ms	15048 KB	Output is correct
41	Correct	35 ms	15040 KB	Output is correct
42	Correct	35 ms	15140 KB	Output is correct
43	Correct	35 ms	17080 KB	Output is correct
44	Correct	37 ms	15408 KB	Output is correct
45	Correct	33 ms	15160 KB	Output is correct
46	Correct	34 ms	15160 KB	Output is correct
47	Correct	43 ms	15152 KB	Output is correct
48	Correct	33 ms	15048 KB	Output is correct
49	Correct	32 ms	15032 KB	Output is correct
50	Correct	35 ms	15144 KB	Output is correct
51	Correct	43 ms	15048 KB	Output is correct
52	Correct	36 ms	15276 KB	Output is correct
53	Correct	31 ms	15176 KB	Output is correct
54	Correct	33 ms	15128 KB	Output is correct
55	Correct	32 ms	15148 KB	Output is correct
56	Correct	32 ms	15144 KB	Output is correct
57	Correct	47 ms	14632 KB	Output is correct
58	Correct	37 ms	15040 KB	Output is correct
59	Correct	35 ms	15048 KB	Output is correct
60	Correct	38 ms	15156 KB	Output is correct
61	Correct	38 ms	15048 KB	Output is correct
62	Correct	36 ms	15036 KB	Output is correct
63	Correct	36 ms	15280 KB	Output is correct
64	Correct	37 ms	19400 KB	Output is correct
65	Correct	38 ms	19368 KB	Output is correct
66	Correct	38 ms	17624 KB	Output is correct
67	Correct	39 ms	19124 KB	Output is correct

Subtask #4
14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	506 ms	15040 KB	Output is correct
2	Correct	790 ms	15156 KB	Output is correct
3	Correct	969 ms	15048 KB	Output is correct
4	Correct	729 ms	15048 KB	Output is correct
5	Correct	777 ms	15160 KB	Output is correct
6	Correct	879 ms	15156 KB	Output is correct
7	Correct	696 ms	15040 KB	Output is correct
8	Correct	751 ms	15160 KB	Output is correct
9	Correct	844 ms	15148 KB	Output is correct
10	Correct	628 ms	15040 KB	Output is correct
11	Correct	779 ms	15148 KB	Output is correct
12	Correct	701 ms	15144 KB	Output is correct
13	Correct	677 ms	15048 KB	Output is correct
14	Correct	0 ms	208 KB	Output is correct
15	Correct	1 ms	592 KB	Output is correct
16	Correct	1 ms	592 KB	Output is correct
17	Correct	33 ms	15048 KB	Output is correct
18	Correct	32 ms	15144 KB	Output is correct
19	Correct	36 ms	15132 KB	Output is correct
20	Correct	40 ms	15052 KB	Output is correct
21	Correct	39 ms	15160 KB	Output is correct
22	Correct	41 ms	15168 KB	Output is correct
23	Correct	41 ms	15144 KB	Output is correct
24	Correct	34 ms	15172 KB	Output is correct
25	Correct	32 ms	15140 KB	Output is correct
26	Correct	31 ms	15144 KB	Output is correct
27	Correct	1 ms	592 KB	Output is correct
28	Correct	1 ms	592 KB	Output is correct
29	Correct	1 ms	592 KB	Output is correct
30	Correct	1 ms	592 KB	Output is correct
31	Correct	1 ms	592 KB	Output is correct
32	Correct	1 ms	592 KB	Output is correct
33	Correct	1 ms	592 KB	Output is correct
34	Correct	1 ms	592 KB	Output is correct
35	Correct	1 ms	592 KB	Output is correct
36	Correct	1 ms	592 KB	Output is correct

Subtask #5
0 / 17.0

#	Verdict	Execution time	Memory	Grader output
1	Execution timed out	4082 ms	3792 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-

Subtask #6
0 / 19.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	336 KB	Output is correct
2	Correct	1 ms	592 KB	Output is correct
3	Correct	1 ms	592 KB	Output is correct
4	Correct	1 ms	592 KB	Output is correct
5	Correct	1 ms	592 KB	Output is correct
6	Correct	1 ms	592 KB	Output is correct
7	Correct	1 ms	592 KB	Output is correct
8	Correct	1 ms	592 KB	Output is correct
9	Correct	1 ms	592 KB	Output is correct
10	Correct	1 ms	592 KB	Output is correct
11	Correct	1 ms	592 KB	Output is correct
12	Correct	0 ms	208 KB	Output is correct
13	Correct	1 ms	592 KB	Output is correct
14	Correct	1 ms	592 KB	Output is correct
15	Correct	1 ms	592 KB	Output is correct
16	Correct	1 ms	592 KB	Output is correct
17	Correct	1 ms	592 KB	Output is correct
18	Correct	1 ms	592 KB	Output is correct
19	Correct	1 ms	592 KB	Output is correct
20	Correct	1 ms	592 KB	Output is correct
21	Correct	1 ms	592 KB	Output is correct
22	Correct	1 ms	592 KB	Output is correct
23	Correct	1 ms	592 KB	Output is correct
24	Correct	1 ms	592 KB	Output is correct
25	Correct	0 ms	336 KB	Output is correct
26	Correct	1 ms	592 KB	Output is correct
27	Correct	1 ms	592 KB	Output is correct
28	Correct	1 ms	592 KB	Output is correct
29	Correct	1 ms	592 KB	Output is correct
30	Correct	1 ms	592 KB	Output is correct
31	Correct	1 ms	592 KB	Output is correct
32	Correct	1 ms	592 KB	Output is correct
33	Correct	1 ms	592 KB	Output is correct
34	Correct	1 ms	592 KB	Output is correct
35	Correct	1 ms	592 KB	Output is correct
36	Correct	19 ms	9872 KB	Output is correct
37	Correct	34 ms	15160 KB	Output is correct
38	Correct	39 ms	15040 KB	Output is correct
39	Correct	33 ms	15092 KB	Output is correct
40	Correct	32 ms	15048 KB	Output is correct
41	Correct	35 ms	15040 KB	Output is correct
42	Correct	35 ms	15140 KB	Output is correct
43	Correct	35 ms	17080 KB	Output is correct
44	Correct	37 ms	15408 KB	Output is correct
45	Correct	33 ms	15160 KB	Output is correct
46	Correct	34 ms	15160 KB	Output is correct
47	Correct	43 ms	15152 KB	Output is correct
48	Correct	33 ms	15048 KB	Output is correct
49	Correct	32 ms	15032 KB	Output is correct
50	Correct	35 ms	15144 KB	Output is correct
51	Correct	43 ms	15048 KB	Output is correct
52	Correct	36 ms	15276 KB	Output is correct
53	Correct	31 ms	15176 KB	Output is correct
54	Correct	33 ms	15128 KB	Output is correct
55	Correct	32 ms	15148 KB	Output is correct
56	Correct	32 ms	15144 KB	Output is correct
57	Correct	47 ms	14632 KB	Output is correct
58	Correct	37 ms	15040 KB	Output is correct
59	Correct	35 ms	15048 KB	Output is correct
60	Correct	38 ms	15156 KB	Output is correct
61	Correct	38 ms	15048 KB	Output is correct
62	Correct	36 ms	15036 KB	Output is correct
63	Correct	36 ms	15280 KB	Output is correct
64	Correct	37 ms	19400 KB	Output is correct
65	Correct	38 ms	19368 KB	Output is correct
66	Correct	38 ms	17624 KB	Output is correct
67	Correct	39 ms	19124 KB	Output is correct
68	Correct	506 ms	15040 KB	Output is correct
69	Correct	790 ms	15156 KB	Output is correct
70	Correct	969 ms	15048 KB	Output is correct
71	Correct	729 ms	15048 KB	Output is correct
72	Correct	777 ms	15160 KB	Output is correct
73	Correct	879 ms	15156 KB	Output is correct
74	Correct	696 ms	15040 KB	Output is correct
75	Correct	751 ms	15160 KB	Output is correct
76	Correct	844 ms	15148 KB	Output is correct
77	Correct	628 ms	15040 KB	Output is correct
78	Correct	779 ms	15148 KB	Output is correct
79	Correct	701 ms	15144 KB	Output is correct
80	Correct	677 ms	15048 KB	Output is correct
81	Correct	0 ms	208 KB	Output is correct
82	Correct	1 ms	592 KB	Output is correct
83	Correct	1 ms	592 KB	Output is correct
84	Correct	33 ms	15048 KB	Output is correct
85	Correct	32 ms	15144 KB	Output is correct
86	Correct	36 ms	15132 KB	Output is correct
87	Correct	40 ms	15052 KB	Output is correct
88	Correct	39 ms	15160 KB	Output is correct
89	Correct	41 ms	15168 KB	Output is correct
90	Correct	41 ms	15144 KB	Output is correct
91	Correct	34 ms	15172 KB	Output is correct
92	Correct	32 ms	15140 KB	Output is correct
93	Correct	31 ms	15144 KB	Output is correct
94	Correct	1 ms	592 KB	Output is correct
95	Correct	1 ms	592 KB	Output is correct
96	Correct	1 ms	592 KB	Output is correct
97	Correct	1 ms	592 KB	Output is correct
98	Correct	1 ms	592 KB	Output is correct
99	Correct	1 ms	592 KB	Output is correct
100	Correct	1 ms	592 KB	Output is correct
101	Correct	1 ms	592 KB	Output is correct
102	Correct	1 ms	592 KB	Output is correct
103	Correct	1 ms	592 KB	Output is correct
104	Execution timed out	4090 ms	13476 KB	Time limit exceeded
105	Halted	0 ms	0 KB	-

Subtask #7
0 / 23.0

#	Verdict	Execution time	Memory	Grader output
1	Execution timed out	4072 ms	11324 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-

Submission #732041

Compilation message

Subtask #1 0 / 4.0

Subtask #2 11.0 / 11.0

Subtask #3 12.0 / 12.0

Subtask #4 14.0 / 14.0

Subtask #5 0 / 17.0

Subtask #6 0 / 19.0

Subtask #7 0 / 23.0

Subtask #1
0 / 4.0

Subtask #2
11.0 / 11.0

Subtask #3
12.0 / 12.0

Subtask #4
14.0 / 14.0

Subtask #5
0 / 17.0

Subtask #6
0 / 19.0

Subtask #7
0 / 23.0