Submission #871891

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
871891	2023-11-11T19:23:31 Z	tvladm2009	Event Hopping 2 (JOI21_event2)	C++17	0 / 100	30 ms	2520 KB

event2

#include <bits/stdc++.h>
 
using i64 = long long;
 
int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
    
    int n, k;
    std::cin >> n >> k;
    std::vector<int> l(n), r(n);
    for (int i = 0; i < n; i++) {
        std::cin >> l[i] >> r[i];
    }
    std::vector<int> dp(n, 0), suff(n + 1, 0);
    for (int i = n - 1; i >= 0; i--) {
        int lft = i + 1, rgh = n - 1, pos = 0;
        while (lft <= rgh) {
            int m = (lft + rgh) / 2;
            if (l[m] >= r[i]) {
                rgh = m - 1;
                pos = m;
            } else {
                lft = m + 1;
            }
        }
        dp[i] = suff[pos] + 1;
        suff[i] = std::max(suff[i + 1], dp[i]);
    }
    int last = 0;
    for (int i = 0; i < n; i++) {
        if (l[i] >= last && dp[i] >= k) {
            last = r[i];
            k--;
            std::cout << i + 1 << "\n";
        }
        if (k == 0) {
            break;
        }
    }
    return 0;
}

Subtask #1

0 / 7.0

#	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	30 ms	2520 KB	Output is correct
5	Correct	29 ms	2284 KB	Output is correct
6	Correct	22 ms	2396 KB	Output is correct
7	Correct	26 ms	2388 KB	Output is correct
8	Correct	28 ms	2396 KB	Output is correct
9	Correct	26 ms	2400 KB	Output is correct
10	Correct	25 ms	2344 KB	Output is correct
11	Correct	26 ms	2268 KB	Output is correct
12	Correct	23 ms	2284 KB	Output is correct
13	Correct	21 ms	2280 KB	Output is correct
14	Correct	30 ms	2152 KB	Output is correct
15	Correct	30 ms	2284 KB	Output is correct
16	Correct	22 ms	2036 KB	Output is correct
17	Correct	25 ms	2040 KB	Output is correct
18	Correct	21 ms	1896 KB	Output is correct
19	Correct	20 ms	1896 KB	Output is correct
20	Correct	24 ms	2160 KB	Output is correct
21	Correct	28 ms	2028 KB	Output is correct
22	Correct	21 ms	1896 KB	Output is correct
23	Correct	23 ms	2052 KB	Output is correct
24	Correct	30 ms	2048 KB	Output is correct
25	Correct	22 ms	1812 KB	Output is correct
26	Correct	22 ms	2020 KB	Output is correct
27	Correct	22 ms	2020 KB	Output is correct
28	Incorrect	17 ms	2020 KB	Output isn't correct
29	Halted	0 ms	0 KB	-

Subtask #2

0 / 1.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Incorrect	0 ms	500 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #3

0 / 31.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Incorrect	0 ms	500 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #4

0 / 61.0

#	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	30 ms	2520 KB	Output is correct
5	Correct	29 ms	2284 KB	Output is correct
6	Correct	22 ms	2396 KB	Output is correct
7	Correct	26 ms	2388 KB	Output is correct
8	Correct	28 ms	2396 KB	Output is correct
9	Correct	26 ms	2400 KB	Output is correct
10	Correct	25 ms	2344 KB	Output is correct
11	Correct	26 ms	2268 KB	Output is correct
12	Correct	23 ms	2284 KB	Output is correct
13	Correct	21 ms	2280 KB	Output is correct
14	Correct	30 ms	2152 KB	Output is correct
15	Correct	30 ms	2284 KB	Output is correct
16	Correct	22 ms	2036 KB	Output is correct
17	Correct	25 ms	2040 KB	Output is correct
18	Correct	21 ms	1896 KB	Output is correct
19	Correct	20 ms	1896 KB	Output is correct
20	Correct	24 ms	2160 KB	Output is correct
21	Correct	28 ms	2028 KB	Output is correct
22	Correct	21 ms	1896 KB	Output is correct
23	Correct	23 ms	2052 KB	Output is correct
24	Correct	30 ms	2048 KB	Output is correct
25	Correct	22 ms	1812 KB	Output is correct
26	Correct	22 ms	2020 KB	Output is correct
27	Correct	22 ms	2020 KB	Output is correct
28	Incorrect	17 ms	2020 KB	Output isn't correct
29	Halted	0 ms	0 KB	-