oj.uz

Submission #605369

# Submission time Handle Problem Language Result Execution time Memory
605369 2022-07-25T16:27:12 Z lunchbox Feast (NOI19_feast) C++17
100 / 100
 155 ms 5680 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 300000;

void update(pair<long long, int>& a, const pair<long long, int>& b) {
  if (a.first < b.first)
    a = b;
}

pair<long long, int> solve(int n, long long *pp, long long t) {
  pair<long long, int> last{0, 0}, dp{0, 0};
  for (int i = 0; i < n; i++) {
    update(dp, make_pair(last.first + pp[i] - t, last.second + 1));
    update(last, make_pair(dp.first - pp[i], dp.second));
  }
  return dp;
}

int main() {
  int n, k;
  scanf("%d%d", &n, &k);
  static long long pp[N];
  for (int i = 0; i < n; i++) {
    int a;
    scanf("%d", &a);
    pp[i] = (i > 0 ? pp[i - 1] : 0) + a;
  }
  long long low = 0, hi = 0x3f3f3f3f3f3f3f3f;
  while (low < hi) {
    long long t = (low + hi) / 2;
    if (solve(n, pp, t).second > k)
      low = t + 1;
    else
      hi = t;
  }
  printf("%lld\n", solve(n, pp, low).first + low * k);
  return 0;
}

Compilation message

feast.cpp: In function 'int main()':
feast.cpp:22:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |   scanf("%d%d", &n, &k);
      |   ~~~~~^~~~~~~~~~~~~~~~
feast.cpp:26:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |     scanf("%d", &a);
      |     ~~~~~^~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 2516 KB Output is correct
2 Correct 54 ms 2816 KB Output is correct
3 Correct 53 ms 2884 KB Output is correct
4 Correct 52 ms 2860 KB Output is correct
5 Correct 50 ms 2916 KB Output is correct
6 Correct 64 ms 2720 KB Output is correct
7 Correct 68 ms 2716 KB Output is correct
8 Correct 58 ms 2824 KB Output is correct
9 Correct 49 ms 2764 KB Output is correct
10 Correct 57 ms 2904 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 2576 KB Output is correct
2 Correct 47 ms 2540 KB Output is correct
3 Correct 48 ms 2576 KB Output is correct
4 Correct 55 ms 2596 KB Output is correct
5 Correct 56 ms 2836 KB Output is correct
6 Correct 46 ms 2768 KB Output is correct
7 Correct 49 ms 2884 KB Output is correct
8 Correct 53 ms 2816 KB Output is correct
9 Correct 51 ms 2816 KB Output is correct
10 Correct 45 ms 2848 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 78 ms 2560 KB Output is correct
2 Correct 104 ms 2480 KB Output is correct
3 Correct 79 ms 2596 KB Output is correct
4 Correct 77 ms 2580 KB Output is correct
5 Correct 82 ms 2600 KB Output is correct
6 Correct 85 ms 2608 KB Output is correct
7 Correct 89 ms 2616 KB Output is correct
8 Correct 82 ms 2592 KB Output is correct
9 Correct 136 ms 2628 KB Output is correct
10 Correct 140 ms 2616 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 312 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 2 ms 312 KB Output is correct
10 Correct 1 ms 212 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 312 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 2 ms 312 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 304 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 1 ms 308 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 312 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 2 ms 312 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 304 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 1 ms 308 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 2 ms 340 KB Output is correct

Subtask #7
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 2516 KB Output is correct
2 Correct 54 ms 2816 KB Output is correct
3 Correct 53 ms 2884 KB Output is correct
4 Correct 52 ms 2860 KB Output is correct
5 Correct 50 ms 2916 KB Output is correct
6 Correct 64 ms 2720 KB Output is correct
7 Correct 68 ms 2716 KB Output is correct
8 Correct 58 ms 2824 KB Output is correct
9 Correct 49 ms 2764 KB Output is correct
10 Correct 57 ms 2904 KB Output is correct
11 Correct 55 ms 2576 KB Output is correct
12 Correct 47 ms 2540 KB Output is correct
13 Correct 48 ms 2576 KB Output is correct
14 Correct 55 ms 2596 KB Output is correct
15 Correct 56 ms 2836 KB Output is correct
16 Correct 46 ms 2768 KB Output is correct
17 Correct 49 ms 2884 KB Output is correct
18 Correct 53 ms 2816 KB Output is correct
19 Correct 51 ms 2816 KB Output is correct
20 Correct 45 ms 2848 KB Output is correct
21 Correct 78 ms 2560 KB Output is correct
22 Correct 104 ms 2480 KB Output is correct
23 Correct 79 ms 2596 KB Output is correct
24 Correct 77 ms 2580 KB Output is correct
25 Correct 82 ms 2600 KB Output is correct
26 Correct 85 ms 2608 KB Output is correct
27 Correct 89 ms 2616 KB Output is correct
28 Correct 82 ms 2592 KB Output is correct
29 Correct 136 ms 2628 KB Output is correct
30 Correct 140 ms 2616 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 308 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 1 ms 312 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 2 ms 312 KB Output is correct
40 Correct 1 ms 212 KB Output is correct
41 Correct 1 ms 212 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 1 ms 304 KB Output is correct
45 Correct 0 ms 212 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 256 KB Output is correct
49 Correct 1 ms 308 KB Output is correct
50 Correct 1 ms 308 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 340 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 1 ms 384 KB Output is correct
55 Correct 1 ms 340 KB Output is correct
56 Correct 1 ms 340 KB Output is correct
57 Correct 1 ms 340 KB Output is correct
58 Correct 1 ms 340 KB Output is correct
59 Correct 1 ms 340 KB Output is correct
60 Correct 2 ms 340 KB Output is correct
61 Correct 126 ms 5552 KB Output is correct
62 Correct 121 ms 5680 KB Output is correct
63 Correct 94 ms 5540 KB Output is correct
64 Correct 137 ms 5644 KB Output is correct
65 Correct 142 ms 5532 KB Output is correct
66 Correct 155 ms 5624 KB Output is correct
67 Correct 122 ms 5540 KB Output is correct
68 Correct 124 ms 5648 KB Output is correct
69 Correct 109 ms 5544 KB Output is correct
70 Correct 105 ms 5512 KB Output is correct