#include <bits/stdc++.h>
using namespace std;
constexpr int maxn = 1010, inf = 0x3f3f3f3f;
int x[maxn], n, k, T, v;
int dp[maxn][maxn];
void solve(int l, int r) {
if(dp[l][r]) return;
dp[l][r] = 1;
if(l && (x[r] - x[l-1]) <= 1ll * 2 * v * T * (r-l+1))
solve(l-1, r);
if(r < n-1 && (x[r+1] - x[l]) <= 1ll * 2 * v * T * (r-l+1))
solve(l, r+1);
}
int main() {
scanf("%d %d %d", &n, &k, &T); --k; // 0-indexed
for(int i = 0; i < n; i++)
scanf("%d", x+i);
int l = 0, r = inf, ans = -1;
while(l <= r) {
int m = (l+r) >> 1;
v = m;
memset(dp, 0, sizeof dp);
solve(k, k);
if(dp[0][n-1])
r = m-1, ans = m;
else
l = m+1;
}
printf("%d\n", ans);
}
Compilation message
sparklers.cpp: In function 'int main()':
sparklers.cpp:20:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
20 | scanf("%d %d %d", &n, &k, &T); --k; // 0-indexed
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
sparklers.cpp:22:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
22 | scanf("%d", x+i);
| ~~~~~^~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
4180 KB |
Output is correct |
2 |
Correct |
7 ms |
4180 KB |
Output is correct |
3 |
Correct |
5 ms |
4280 KB |
Output is correct |
4 |
Correct |
5 ms |
4180 KB |
Output is correct |
5 |
Correct |
5 ms |
4180 KB |
Output is correct |
6 |
Correct |
5 ms |
4272 KB |
Output is correct |
7 |
Correct |
5 ms |
4180 KB |
Output is correct |
8 |
Correct |
5 ms |
4180 KB |
Output is correct |
9 |
Correct |
5 ms |
4276 KB |
Output is correct |
10 |
Correct |
5 ms |
4272 KB |
Output is correct |
11 |
Correct |
5 ms |
4180 KB |
Output is correct |
12 |
Correct |
5 ms |
4180 KB |
Output is correct |
13 |
Correct |
5 ms |
4276 KB |
Output is correct |
14 |
Correct |
5 ms |
4180 KB |
Output is correct |
15 |
Correct |
5 ms |
4296 KB |
Output is correct |
16 |
Correct |
5 ms |
4180 KB |
Output is correct |
17 |
Correct |
5 ms |
4180 KB |
Output is correct |
18 |
Correct |
5 ms |
4272 KB |
Output is correct |
19 |
Correct |
6 ms |
4296 KB |
Output is correct |
20 |
Correct |
5 ms |
4180 KB |
Output is correct |
21 |
Correct |
5 ms |
4268 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
4180 KB |
Output is correct |
2 |
Correct |
7 ms |
4180 KB |
Output is correct |
3 |
Correct |
5 ms |
4280 KB |
Output is correct |
4 |
Correct |
5 ms |
4180 KB |
Output is correct |
5 |
Correct |
5 ms |
4180 KB |
Output is correct |
6 |
Correct |
5 ms |
4272 KB |
Output is correct |
7 |
Correct |
5 ms |
4180 KB |
Output is correct |
8 |
Correct |
5 ms |
4180 KB |
Output is correct |
9 |
Correct |
5 ms |
4276 KB |
Output is correct |
10 |
Correct |
5 ms |
4272 KB |
Output is correct |
11 |
Correct |
5 ms |
4180 KB |
Output is correct |
12 |
Correct |
5 ms |
4180 KB |
Output is correct |
13 |
Correct |
5 ms |
4276 KB |
Output is correct |
14 |
Correct |
5 ms |
4180 KB |
Output is correct |
15 |
Correct |
5 ms |
4296 KB |
Output is correct |
16 |
Correct |
5 ms |
4180 KB |
Output is correct |
17 |
Correct |
5 ms |
4180 KB |
Output is correct |
18 |
Correct |
5 ms |
4272 KB |
Output is correct |
19 |
Correct |
6 ms |
4296 KB |
Output is correct |
20 |
Correct |
5 ms |
4180 KB |
Output is correct |
21 |
Correct |
5 ms |
4268 KB |
Output is correct |
22 |
Correct |
31 ms |
4276 KB |
Output is correct |
23 |
Correct |
17 ms |
4308 KB |
Output is correct |
24 |
Correct |
9 ms |
4180 KB |
Output is correct |
25 |
Correct |
8 ms |
4308 KB |
Output is correct |
26 |
Correct |
24 ms |
4416 KB |
Output is correct |
27 |
Correct |
23 ms |
4308 KB |
Output is correct |
28 |
Correct |
36 ms |
4308 KB |
Output is correct |
29 |
Correct |
36 ms |
4328 KB |
Output is correct |
30 |
Correct |
32 ms |
4328 KB |
Output is correct |
31 |
Correct |
29 ms |
4308 KB |
Output is correct |
32 |
Correct |
34 ms |
4308 KB |
Output is correct |
33 |
Correct |
34 ms |
4308 KB |
Output is correct |
34 |
Correct |
20 ms |
4308 KB |
Output is correct |
35 |
Correct |
40 ms |
4308 KB |
Output is correct |
36 |
Correct |
14 ms |
4304 KB |
Output is correct |
37 |
Correct |
14 ms |
4308 KB |
Output is correct |
38 |
Correct |
31 ms |
4308 KB |
Output is correct |
39 |
Correct |
13 ms |
4308 KB |
Output is correct |
40 |
Correct |
50 ms |
4308 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
4180 KB |
Output is correct |
2 |
Correct |
7 ms |
4180 KB |
Output is correct |
3 |
Correct |
5 ms |
4280 KB |
Output is correct |
4 |
Correct |
5 ms |
4180 KB |
Output is correct |
5 |
Correct |
5 ms |
4180 KB |
Output is correct |
6 |
Correct |
5 ms |
4272 KB |
Output is correct |
7 |
Correct |
5 ms |
4180 KB |
Output is correct |
8 |
Correct |
5 ms |
4180 KB |
Output is correct |
9 |
Correct |
5 ms |
4276 KB |
Output is correct |
10 |
Correct |
5 ms |
4272 KB |
Output is correct |
11 |
Correct |
5 ms |
4180 KB |
Output is correct |
12 |
Correct |
5 ms |
4180 KB |
Output is correct |
13 |
Correct |
5 ms |
4276 KB |
Output is correct |
14 |
Correct |
5 ms |
4180 KB |
Output is correct |
15 |
Correct |
5 ms |
4296 KB |
Output is correct |
16 |
Correct |
5 ms |
4180 KB |
Output is correct |
17 |
Correct |
5 ms |
4180 KB |
Output is correct |
18 |
Correct |
5 ms |
4272 KB |
Output is correct |
19 |
Correct |
6 ms |
4296 KB |
Output is correct |
20 |
Correct |
5 ms |
4180 KB |
Output is correct |
21 |
Correct |
5 ms |
4268 KB |
Output is correct |
22 |
Correct |
31 ms |
4276 KB |
Output is correct |
23 |
Correct |
17 ms |
4308 KB |
Output is correct |
24 |
Correct |
9 ms |
4180 KB |
Output is correct |
25 |
Correct |
8 ms |
4308 KB |
Output is correct |
26 |
Correct |
24 ms |
4416 KB |
Output is correct |
27 |
Correct |
23 ms |
4308 KB |
Output is correct |
28 |
Correct |
36 ms |
4308 KB |
Output is correct |
29 |
Correct |
36 ms |
4328 KB |
Output is correct |
30 |
Correct |
32 ms |
4328 KB |
Output is correct |
31 |
Correct |
29 ms |
4308 KB |
Output is correct |
32 |
Correct |
34 ms |
4308 KB |
Output is correct |
33 |
Correct |
34 ms |
4308 KB |
Output is correct |
34 |
Correct |
20 ms |
4308 KB |
Output is correct |
35 |
Correct |
40 ms |
4308 KB |
Output is correct |
36 |
Correct |
14 ms |
4304 KB |
Output is correct |
37 |
Correct |
14 ms |
4308 KB |
Output is correct |
38 |
Correct |
31 ms |
4308 KB |
Output is correct |
39 |
Correct |
13 ms |
4308 KB |
Output is correct |
40 |
Correct |
50 ms |
4308 KB |
Output is correct |
41 |
Runtime error |
2 ms |
596 KB |
Execution killed with signal 11 |
42 |
Halted |
0 ms |
0 KB |
- |