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Submission #850938

# Submission time Handle Problem Language Result Execution time Memory
850938 2023-09-18T00:12:44 Z olnyfcxwps Radio Towers (IOI22_towers) C++17
11 / 100
 4000 ms 2632 KB 
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

struct Tower {
    int pos;
    int h;
}towers[100000];

int height[100000];
int tower_cnt;
bool picked[100000];

void init(int N, vector<int> H) {
    tower_cnt = N;
    for (int i = 0; i < N; i++) {
        height[i] = H[i];
        towers[i].h = H[i];
        towers[i].pos = i;
    }
}

bool cmp(struct Tower t1, struct Tower t2) {
    return t1.h < t2.h;
}

int max_towers(int L, int R, int D) {
    int ans = 0;
    sort(towers, towers + tower_cnt, cmp);
    /*for (int i = 0; i < tower_cnt; i++) {
        cout << towers[i].pos << "\n";
    }*/
    for (int i = 0; i < tower_cnt; i++) {
        int pos = towers[i].pos;
        if (pos < L || pos > R) {
            continue;
        }
        int h = towers[i].h;
        bool valid = true;

        int max_left = h;
        for (int j = pos - 1; j >= L; j--) {
            if (picked[j]) {
                if (max_left - D < height[j] || max_left - D < h) {
                    valid = false;
                    break;
                }
            }
            if (height[j] > max_left) {
                max_left = height[j];
            }
        }

        int max_right = h;
        for (int j = pos + 1; j <= R; j++) {
            if (picked[j]) {
                if (max_right - D < height[j] || max_right - D < h) {
                    valid = false;
                    break;
                }
            }
            if (height[j] > max_right) {
                max_right = height[j];
            }
        }

        if (valid) {
            picked[pos] = true;
            // cout << pos << "\n";
            ans += 1;
        }
    }
    return ans;
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4043 ms 1616 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 344 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 596 KB Output is correct
13 Correct 1 ms 484 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 1 ms 484 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 3 ms 344 KB Output is correct
21 Correct 3 ms 344 KB Output is correct
22 Correct 3 ms 344 KB Output is correct
23 Correct 4 ms 344 KB Output is correct
24 Correct 3 ms 344 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 2 ms 344 KB Output is correct
28 Correct 2 ms 344 KB Output is correct
29 Correct 2 ms 344 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 4 ms 344 KB Output is correct
33 Correct 4 ms 344 KB Output is correct
34 Correct 4 ms 344 KB Output is correct
35 Correct 3 ms 344 KB Output is correct

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 596 KB Output is correct
13 Correct 1 ms 484 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 1 ms 484 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 3 ms 344 KB Output is correct
21 Correct 3 ms 344 KB Output is correct
22 Correct 3 ms 344 KB Output is correct
23 Correct 4 ms 344 KB Output is correct
24 Correct 3 ms 344 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 2 ms 344 KB Output is correct
28 Correct 2 ms 344 KB Output is correct
29 Correct 2 ms 344 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 4 ms 344 KB Output is correct
33 Correct 4 ms 344 KB Output is correct
34 Correct 4 ms 344 KB Output is correct
35 Correct 3 ms 344 KB Output is correct
36 Correct 306 ms 1732 KB Output is correct
37 Correct 208 ms 2384 KB Output is correct
38 Correct 114 ms 2632 KB Output is correct
39 Correct 54 ms 2384 KB Output is correct
40 Correct 120 ms 2380 KB Output is correct
41 Correct 3909 ms 2380 KB Output is correct
42 Correct 19 ms 2376 KB Output is correct
43 Correct 2393 ms 2376 KB Output is correct
44 Correct 183 ms 2360 KB Output is correct
45 Correct 19 ms 2388 KB Output is correct
46 Correct 19 ms 2380 KB Output is correct
47 Correct 1403 ms 2380 KB Output is correct
48 Correct 357 ms 2380 KB Output is correct
49 Correct 55 ms 2376 KB Output is correct
50 Correct 452 ms 2380 KB Output is correct
51 Correct 1078 ms 2384 KB Output is correct
52 Execution timed out 4089 ms 2380 KB Time limit exceeded
53 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4016 ms 2376 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4037 ms 916 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 344 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 596 KB Output is correct
13 Correct 1 ms 484 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 1 ms 484 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 3 ms 344 KB Output is correct
21 Correct 3 ms 344 KB Output is correct
22 Correct 3 ms 344 KB Output is correct
23 Correct 4 ms 344 KB Output is correct
24 Correct 3 ms 344 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 2 ms 344 KB Output is correct
28 Correct 2 ms 344 KB Output is correct
29 Correct 2 ms 344 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 4 ms 344 KB Output is correct
33 Correct 4 ms 344 KB Output is correct
34 Correct 4 ms 344 KB Output is correct
35 Correct 3 ms 344 KB Output is correct
36 Correct 306 ms 1732 KB Output is correct
37 Correct 208 ms 2384 KB Output is correct
38 Correct 114 ms 2632 KB Output is correct
39 Correct 54 ms 2384 KB Output is correct
40 Correct 120 ms 2380 KB Output is correct
41 Correct 3909 ms 2380 KB Output is correct
42 Correct 19 ms 2376 KB Output is correct
43 Correct 2393 ms 2376 KB Output is correct
44 Correct 183 ms 2360 KB Output is correct
45 Correct 19 ms 2388 KB Output is correct
46 Correct 19 ms 2380 KB Output is correct
47 Correct 1403 ms 2380 KB Output is correct
48 Correct 357 ms 2380 KB Output is correct
49 Correct 55 ms 2376 KB Output is correct
50 Correct 452 ms 2380 KB Output is correct
51 Correct 1078 ms 2384 KB Output is correct
52 Execution timed out 4089 ms 2380 KB Time limit exceeded
53 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4043 ms 1616 KB Time limit exceeded
2 Halted 0 ms 0 KB -