| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 441010 |
2021-07-03T21:54:10 Z |
dongliu0426 |
Feast (NOI19_feast) |
C++14 |
|
415 ms |
23292 KB |
#include <bits/stdc++.h>
using namespace std;
const int N = 300000;
const long long INF = (long long) 300000 * 1000000000;
const long double EPS = 1e-3;
int n, k, a[N + 1];
pair<long double, int> dp[N + 1][2];
bool check(long double penalty) {
dp[0][0] = {0, 0}, dp[0][1] = {-INF, 0};
for (int i = 1; i <= n; ++i) {
dp[i][0] = max(dp[i - 1][0], dp[i - 1][1]);
dp[i][1] = max(
make_pair(dp[i - 1][1].first + a[i], dp[i - 1][1].second),
make_pair(dp[i - 1][0].first + a[i] - penalty, dp[i - 1][0].second + 1)
);
}
return max(dp[n][0], dp[n][1]).second >= k;
};
int main() {
scanf("%d%d", &n, &k);
for (int i = 1; i <= n; ++i)
scanf("%d", a + i);
long double lower = 0, upper = INF;
while (lower + EPS < upper) {
long double mid = (lower + upper) / 2;
if (check(mid)) {
lower = mid;
} else {
upper = mid;
}
}
long double penalty = lower;
check(penalty);
printf("%lld\n", (long long) round(penalty * k + max(dp[n][0], dp[n][1]).first));
}
Compilation message
feast.cpp: In function 'int main()':
feast.cpp:24:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
24 | scanf("%d%d", &n, &k);
| ~~~~~^~~~~~~~~~~~~~~~
feast.cpp:26:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
26 | scanf("%d", a + i);
| ~~~~~^~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
277 ms |
19640 KB |
Output is correct |
| 2 |
Correct |
279 ms |
19960 KB |
Output is correct |
| 3 |
Correct |
284 ms |
20328 KB |
Output is correct |
| 4 |
Correct |
284 ms |
19980 KB |
Output is correct |
| 5 |
Correct |
283 ms |
19964 KB |
Output is correct |
| 6 |
Correct |
283 ms |
19636 KB |
Output is correct |
| 7 |
Correct |
277 ms |
19628 KB |
Output is correct |
| 8 |
Correct |
281 ms |
19996 KB |
Output is correct |
| 9 |
Correct |
285 ms |
19656 KB |
Output is correct |
| 10 |
Correct |
276 ms |
19880 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
267 ms |
19652 KB |
Output is correct |
| 2 |
Correct |
274 ms |
20208 KB |
Output is correct |
| 3 |
Correct |
275 ms |
19652 KB |
Output is correct |
| 4 |
Correct |
268 ms |
19860 KB |
Output is correct |
| 5 |
Correct |
273 ms |
19648 KB |
Output is correct |
| 6 |
Correct |
268 ms |
20856 KB |
Output is correct |
| 7 |
Correct |
271 ms |
21320 KB |
Output is correct |
| 8 |
Correct |
288 ms |
23000 KB |
Output is correct |
| 9 |
Correct |
273 ms |
22472 KB |
Output is correct |
| 10 |
Correct |
277 ms |
21148 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
321 ms |
20016 KB |
Output is correct |
| 2 |
Correct |
320 ms |
19756 KB |
Output is correct |
| 3 |
Correct |
326 ms |
19984 KB |
Output is correct |
| 4 |
Correct |
326 ms |
19764 KB |
Output is correct |
| 5 |
Correct |
329 ms |
20036 KB |
Output is correct |
| 6 |
Correct |
326 ms |
20172 KB |
Output is correct |
| 7 |
Correct |
325 ms |
20140 KB |
Output is correct |
| 8 |
Correct |
320 ms |
20068 KB |
Output is correct |
| 9 |
Correct |
324 ms |
20200 KB |
Output is correct |
| 10 |
Correct |
325 ms |
20144 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
204 KB |
Output is correct |
| 5 |
Correct |
0 ms |
204 KB |
Output is correct |
| 6 |
Correct |
1 ms |
204 KB |
Output is correct |
| 7 |
Correct |
0 ms |
204 KB |
Output is correct |
| 8 |
Correct |
1 ms |
204 KB |
Output is correct |
| 9 |
Correct |
1 ms |
204 KB |
Output is correct |
| 10 |
Correct |
0 ms |
204 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
204 KB |
Output is correct |
| 5 |
Correct |
0 ms |
204 KB |
Output is correct |
| 6 |
Correct |
1 ms |
204 KB |
Output is correct |
| 7 |
Correct |
0 ms |
204 KB |
Output is correct |
| 8 |
Correct |
1 ms |
204 KB |
Output is correct |
| 9 |
Correct |
1 ms |
204 KB |
Output is correct |
| 10 |
Correct |
0 ms |
204 KB |
Output is correct |
| 11 |
Correct |
1 ms |
204 KB |
Output is correct |
| 12 |
Correct |
1 ms |
204 KB |
Output is correct |
| 13 |
Correct |
1 ms |
204 KB |
Output is correct |
| 14 |
Correct |
1 ms |
204 KB |
Output is correct |
| 15 |
Correct |
1 ms |
204 KB |
Output is correct |
| 16 |
Correct |
1 ms |
204 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
1 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
332 KB |
Output is correct |
| 20 |
Correct |
1 ms |
332 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
204 KB |
Output is correct |
| 5 |
Correct |
0 ms |
204 KB |
Output is correct |
| 6 |
Correct |
1 ms |
204 KB |
Output is correct |
| 7 |
Correct |
0 ms |
204 KB |
Output is correct |
| 8 |
Correct |
1 ms |
204 KB |
Output is correct |
| 9 |
Correct |
1 ms |
204 KB |
Output is correct |
| 10 |
Correct |
0 ms |
204 KB |
Output is correct |
| 11 |
Correct |
1 ms |
204 KB |
Output is correct |
| 12 |
Correct |
1 ms |
204 KB |
Output is correct |
| 13 |
Correct |
1 ms |
204 KB |
Output is correct |
| 14 |
Correct |
1 ms |
204 KB |
Output is correct |
| 15 |
Correct |
1 ms |
204 KB |
Output is correct |
| 16 |
Correct |
1 ms |
204 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
1 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
332 KB |
Output is correct |
| 20 |
Correct |
1 ms |
332 KB |
Output is correct |
| 21 |
Correct |
3 ms |
332 KB |
Output is correct |
| 22 |
Correct |
3 ms |
332 KB |
Output is correct |
| 23 |
Correct |
3 ms |
332 KB |
Output is correct |
| 24 |
Correct |
4 ms |
332 KB |
Output is correct |
| 25 |
Correct |
3 ms |
432 KB |
Output is correct |
| 26 |
Correct |
3 ms |
332 KB |
Output is correct |
| 27 |
Correct |
3 ms |
436 KB |
Output is correct |
| 28 |
Correct |
3 ms |
332 KB |
Output is correct |
| 29 |
Correct |
3 ms |
332 KB |
Output is correct |
| 30 |
Correct |
2 ms |
332 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
277 ms |
19640 KB |
Output is correct |
| 2 |
Correct |
279 ms |
19960 KB |
Output is correct |
| 3 |
Correct |
284 ms |
20328 KB |
Output is correct |
| 4 |
Correct |
284 ms |
19980 KB |
Output is correct |
| 5 |
Correct |
283 ms |
19964 KB |
Output is correct |
| 6 |
Correct |
283 ms |
19636 KB |
Output is correct |
| 7 |
Correct |
277 ms |
19628 KB |
Output is correct |
| 8 |
Correct |
281 ms |
19996 KB |
Output is correct |
| 9 |
Correct |
285 ms |
19656 KB |
Output is correct |
| 10 |
Correct |
276 ms |
19880 KB |
Output is correct |
| 11 |
Correct |
267 ms |
19652 KB |
Output is correct |
| 12 |
Correct |
274 ms |
20208 KB |
Output is correct |
| 13 |
Correct |
275 ms |
19652 KB |
Output is correct |
| 14 |
Correct |
268 ms |
19860 KB |
Output is correct |
| 15 |
Correct |
273 ms |
19648 KB |
Output is correct |
| 16 |
Correct |
268 ms |
20856 KB |
Output is correct |
| 17 |
Correct |
271 ms |
21320 KB |
Output is correct |
| 18 |
Correct |
288 ms |
23000 KB |
Output is correct |
| 19 |
Correct |
273 ms |
22472 KB |
Output is correct |
| 20 |
Correct |
277 ms |
21148 KB |
Output is correct |
| 21 |
Correct |
321 ms |
20016 KB |
Output is correct |
| 22 |
Correct |
320 ms |
19756 KB |
Output is correct |
| 23 |
Correct |
326 ms |
19984 KB |
Output is correct |
| 24 |
Correct |
326 ms |
19764 KB |
Output is correct |
| 25 |
Correct |
329 ms |
20036 KB |
Output is correct |
| 26 |
Correct |
326 ms |
20172 KB |
Output is correct |
| 27 |
Correct |
325 ms |
20140 KB |
Output is correct |
| 28 |
Correct |
320 ms |
20068 KB |
Output is correct |
| 29 |
Correct |
324 ms |
20200 KB |
Output is correct |
| 30 |
Correct |
325 ms |
20144 KB |
Output is correct |
| 31 |
Correct |
1 ms |
204 KB |
Output is correct |
| 32 |
Correct |
1 ms |
204 KB |
Output is correct |
| 33 |
Correct |
1 ms |
204 KB |
Output is correct |
| 34 |
Correct |
0 ms |
204 KB |
Output is correct |
| 35 |
Correct |
0 ms |
204 KB |
Output is correct |
| 36 |
Correct |
1 ms |
204 KB |
Output is correct |
| 37 |
Correct |
0 ms |
204 KB |
Output is correct |
| 38 |
Correct |
1 ms |
204 KB |
Output is correct |
| 39 |
Correct |
1 ms |
204 KB |
Output is correct |
| 40 |
Correct |
0 ms |
204 KB |
Output is correct |
| 41 |
Correct |
1 ms |
204 KB |
Output is correct |
| 42 |
Correct |
1 ms |
204 KB |
Output is correct |
| 43 |
Correct |
1 ms |
204 KB |
Output is correct |
| 44 |
Correct |
1 ms |
204 KB |
Output is correct |
| 45 |
Correct |
1 ms |
204 KB |
Output is correct |
| 46 |
Correct |
1 ms |
204 KB |
Output is correct |
| 47 |
Correct |
1 ms |
332 KB |
Output is correct |
| 48 |
Correct |
1 ms |
204 KB |
Output is correct |
| 49 |
Correct |
1 ms |
332 KB |
Output is correct |
| 50 |
Correct |
1 ms |
332 KB |
Output is correct |
| 51 |
Correct |
3 ms |
332 KB |
Output is correct |
| 52 |
Correct |
3 ms |
332 KB |
Output is correct |
| 53 |
Correct |
3 ms |
332 KB |
Output is correct |
| 54 |
Correct |
4 ms |
332 KB |
Output is correct |
| 55 |
Correct |
3 ms |
432 KB |
Output is correct |
| 56 |
Correct |
3 ms |
332 KB |
Output is correct |
| 57 |
Correct |
3 ms |
436 KB |
Output is correct |
| 58 |
Correct |
3 ms |
332 KB |
Output is correct |
| 59 |
Correct |
3 ms |
332 KB |
Output is correct |
| 60 |
Correct |
2 ms |
332 KB |
Output is correct |
| 61 |
Correct |
401 ms |
22724 KB |
Output is correct |
| 62 |
Correct |
393 ms |
23292 KB |
Output is correct |
| 63 |
Correct |
347 ms |
22692 KB |
Output is correct |
| 64 |
Correct |
415 ms |
23108 KB |
Output is correct |
| 65 |
Correct |
414 ms |
23020 KB |
Output is correct |
| 66 |
Correct |
405 ms |
23048 KB |
Output is correct |
| 67 |
Correct |
406 ms |
22692 KB |
Output is correct |
| 68 |
Correct |
329 ms |
23108 KB |
Output is correct |
| 69 |
Correct |
319 ms |
22688 KB |
Output is correct |
| 70 |
Correct |
314 ms |
22468 KB |
Output is correct |
