oj.uz

Submission #970944

# Submission time Handle Problem Language Result Execution time Memory
970944 2024-04-27T14:55:04 Z jadai007 Lasers (NOI19_lasers) C++14
100 / 100
 130 ms 44056 KB 
#include <bits/stdc++.h>
using namespace std;
 
int main() {
    cin.tie(nullptr)->sync_with_stdio(false);
 
    int L, R;
    cin >> L >> R;
 
    vector <int> sz(R + 1);
    vector <vector <int>> walls(R + 1);
    for (int i = 1; i <= R; i++) {
        cin >> sz[i];
 
        walls[i].resize(sz[i] + 1);
        for (int j = 1; j <= sz[i]; j++) {
            cin >> walls[i][j];
            walls[i][j] += walls[i][j - 1];
        }
    }
 
    vector <pair <int, int>> events;
    for (int i = 1; i <= R; i++) {
        for (int j = 1; j <= sz[i]; j++) {
            int lm = walls[i][j - 1] + 1;
            int rm = L - (walls[i][sz[i]] - walls[i][j]);
            int cur = walls[i][j] - walls[i][j - 1];
            if (rm - cur + 1 <= lm + cur - 1) {
                events.emplace_back(rm - cur + 1, 1);
                events.emplace_back(lm + cur, -1);
            }
        }
    }
 
    sort(events.begin(), events.end());
 
    int lt = -1, ans = 0, sum = 0;
    for (auto [x, v] : events) {
        sum += v;
        if (sum > 0 and lt == -1) lt = x;
        else if (lt != -1 and sum == 0) ans += x - lt, lt = -1;
    }
    cout << ans;
    return 0;
}

Compilation message

lasers.cpp: In function 'int main()':
lasers.cpp:38:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   38 |     for (auto [x, v] : events) {
      |               ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 600 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 604 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 600 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 110 ms 44056 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 0 ms 456 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 123 ms 41644 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 7124 KB Output is correct
2 Correct 6 ms 1500 KB Output is correct
3 Correct 7 ms 1372 KB Output is correct
4 Correct 44 ms 6612 KB Output is correct
5 Correct 18 ms 3532 KB Output is correct
6 Correct 24 ms 3892 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 26 ms 4200 KB Output is correct
9 Correct 19 ms 6100 KB Output is correct
10 Correct 43 ms 8156 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 456 KB Output is correct
8 Correct 1 ms 352 KB Output is correct
9 Correct 1 ms 464 KB Output is correct
10 Correct 1 ms 344 KB Output is correct

Subtask #5
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 7124 KB Output is correct
2 Correct 6 ms 1500 KB Output is correct
3 Correct 7 ms 1372 KB Output is correct
4 Correct 44 ms 6612 KB Output is correct
5 Correct 18 ms 3532 KB Output is correct
6 Correct 24 ms 3892 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 26 ms 4200 KB Output is correct
9 Correct 19 ms 6100 KB Output is correct
10 Correct 43 ms 8156 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 456 KB Output is correct
18 Correct 1 ms 352 KB Output is correct
19 Correct 1 ms 464 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 128 ms 39140 KB Output is correct
22 Correct 16 ms 2776 KB Output is correct
23 Correct 10 ms 2260 KB Output is correct
24 Correct 39 ms 7612 KB Output is correct
25 Correct 122 ms 39396 KB Output is correct
26 Correct 35 ms 7884 KB Output is correct
27 Correct 13 ms 2512 KB Output is correct
28 Correct 123 ms 38456 KB Output is correct
29 Correct 121 ms 39360 KB Output is correct
30 Correct 31 ms 4812 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 600 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 110 ms 44056 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 0 ms 456 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 123 ms 41644 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 37 ms 7124 KB Output is correct
22 Correct 6 ms 1500 KB Output is correct
23 Correct 7 ms 1372 KB Output is correct
24 Correct 44 ms 6612 KB Output is correct
25 Correct 18 ms 3532 KB Output is correct
26 Correct 24 ms 3892 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 26 ms 4200 KB Output is correct
29 Correct 19 ms 6100 KB Output is correct
30 Correct 43 ms 8156 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 0 ms 456 KB Output is correct
38 Correct 1 ms 352 KB Output is correct
39 Correct 1 ms 464 KB Output is correct
40 Correct 1 ms 344 KB Output is correct
41 Correct 128 ms 39140 KB Output is correct
42 Correct 16 ms 2776 KB Output is correct
43 Correct 10 ms 2260 KB Output is correct
44 Correct 39 ms 7612 KB Output is correct
45 Correct 122 ms 39396 KB Output is correct
46 Correct 35 ms 7884 KB Output is correct
47 Correct 13 ms 2512 KB Output is correct
48 Correct 123 ms 38456 KB Output is correct
49 Correct 121 ms 39360 KB Output is correct
50 Correct 31 ms 4812 KB Output is correct
51 Correct 14 ms 2516 KB Output is correct
52 Correct 126 ms 41224 KB Output is correct
53 Correct 129 ms 40136 KB Output is correct
54 Correct 25 ms 4556 KB Output is correct
55 Correct 59 ms 10700 KB Output is correct
56 Correct 34 ms 7616 KB Output is correct
57 Correct 44 ms 9172 KB Output is correct
58 Correct 130 ms 39384 KB Output is correct
59 Correct 29 ms 4808 KB Output is correct
60 Correct 40 ms 6088 KB Output is correct