oj.uz

Submission #697771

# Submission time Handle Problem Language Result Execution time Memory
697771 2023-02-11T04:09:13 Z minhnhatnoe Feast (NOI19_feast) C++17
100 / 100
 158 ms 11596 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
vector<int> a;
vector<ll> pf;
pair<ll, int> solve(ll cost){
    vector<pair<ll, int>> dp(a.size());
    pair<ll, int> maxval(0, 0);
    for (int i=0; i<a.size(); i++){
        dp[i] = max(i ? dp[i-1] : make_pair(0LL, 0),
                    make_pair(pf[i] - cost + maxval.first, maxval.second + 1));
        maxval = max(maxval, make_pair(-pf[i] + dp[i].first, dp[i].second));
    }
    return dp.back();
}
signed main(){
    cin.tie(0)->sync_with_stdio(0);
    int n, k; cin >> n >> k;
    a.resize(n);
    for (int i=0; i<n; i++) cin >> a[i];
    pf.resize(n);
    for (ll i=0, p=0; i<n; i++){
        p = pf[i] = p + a[i];
    }
    ll bl = 0, br = 1e15;
    while (bl < br){
        ll bm = (bl + br)>>1;
        pair<ll, int> r = solve(bm);
        if (r.second <= k) br = bm;
        else bl = bm+1;
    }
    pair<ll, int> r = solve(bl);
    cout << r.first + bl*r.second << "\n";
}

Compilation message

feast.cpp: In function 'std::pair<long long int, int> solve(ll)':
feast.cpp:9:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |     for (int i=0; i<a.size(); i++){
      |                   ~^~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 127 ms 11020 KB Output is correct
2 Correct 137 ms 11188 KB Output is correct
3 Correct 139 ms 11380 KB Output is correct
4 Correct 134 ms 11340 KB Output is correct
5 Correct 130 ms 11192 KB Output is correct
6 Correct 130 ms 11088 KB Output is correct
7 Correct 148 ms 11096 KB Output is correct
8 Correct 134 ms 11276 KB Output is correct
9 Correct 135 ms 11108 KB Output is correct
10 Correct 131 ms 11192 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 135 ms 9388 KB Output is correct
2 Correct 123 ms 9612 KB Output is correct
3 Correct 118 ms 9428 KB Output is correct
4 Correct 126 ms 9516 KB Output is correct
5 Correct 154 ms 11096 KB Output is correct
6 Correct 120 ms 9520 KB Output is correct
7 Correct 124 ms 9592 KB Output is correct
8 Correct 146 ms 11312 KB Output is correct
9 Correct 136 ms 11048 KB Output is correct
10 Correct 126 ms 9612 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 136 ms 11364 KB Output is correct
2 Correct 140 ms 11320 KB Output is correct
3 Correct 134 ms 11440 KB Output is correct
4 Correct 140 ms 11320 KB Output is correct
5 Correct 139 ms 11340 KB Output is correct
6 Correct 133 ms 11448 KB Output is correct
7 Correct 144 ms 11504 KB Output is correct
8 Correct 140 ms 11324 KB Output is correct
9 Correct 138 ms 11564 KB Output is correct
10 Correct 154 ms 11520 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 320 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 324 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 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 320 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 324 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 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 320 KB Output is correct
15 Correct 1 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 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 320 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 324 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 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 320 KB Output is correct
15 Correct 1 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 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 2 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 388 KB Output is correct
25 Correct 2 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 332 KB Output is correct
29 Correct 2 ms 328 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 127 ms 11020 KB Output is correct
2 Correct 137 ms 11188 KB Output is correct
3 Correct 139 ms 11380 KB Output is correct
4 Correct 134 ms 11340 KB Output is correct
5 Correct 130 ms 11192 KB Output is correct
6 Correct 130 ms 11088 KB Output is correct
7 Correct 148 ms 11096 KB Output is correct
8 Correct 134 ms 11276 KB Output is correct
9 Correct 135 ms 11108 KB Output is correct
10 Correct 131 ms 11192 KB Output is correct
11 Correct 135 ms 9388 KB Output is correct
12 Correct 123 ms 9612 KB Output is correct
13 Correct 118 ms 9428 KB Output is correct
14 Correct 126 ms 9516 KB Output is correct
15 Correct 154 ms 11096 KB Output is correct
16 Correct 120 ms 9520 KB Output is correct
17 Correct 124 ms 9592 KB Output is correct
18 Correct 146 ms 11312 KB Output is correct
19 Correct 136 ms 11048 KB Output is correct
20 Correct 126 ms 9612 KB Output is correct
21 Correct 136 ms 11364 KB Output is correct
22 Correct 140 ms 11320 KB Output is correct
23 Correct 134 ms 11440 KB Output is correct
24 Correct 140 ms 11320 KB Output is correct
25 Correct 139 ms 11340 KB Output is correct
26 Correct 133 ms 11448 KB Output is correct
27 Correct 144 ms 11504 KB Output is correct
28 Correct 140 ms 11324 KB Output is correct
29 Correct 138 ms 11564 KB Output is correct
30 Correct 154 ms 11520 KB Output is correct
31 Correct 0 ms 320 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 324 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 1 ms 324 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 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 320 KB Output is correct
45 Correct 1 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 212 KB Output is correct
49 Correct 1 ms 212 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Correct 2 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 388 KB Output is correct
55 Correct 2 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 332 KB Output is correct
59 Correct 2 ms 328 KB Output is correct
60 Correct 2 ms 340 KB Output is correct
61 Correct 141 ms 11300 KB Output is correct
62 Correct 152 ms 11596 KB Output is correct
63 Correct 137 ms 11264 KB Output is correct
64 Correct 158 ms 11516 KB Output is correct
65 Correct 149 ms 11468 KB Output is correct
66 Correct 152 ms 11460 KB Output is correct
67 Correct 149 ms 11300 KB Output is correct
68 Correct 140 ms 11504 KB Output is correct
69 Correct 136 ms 11284 KB Output is correct
70 Correct 136 ms 11244 KB Output is correct