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답안 #328434

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
328434 2020-11-16T14:36:11 Z ryangohca Feast (NOI19_feast) C++17
100 / 100
 490 ms 22380 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;
#define pii pair<int, int>
set<pii> nums;
set<pii> absnums;
int32_t main() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    int n, k; cin >> n >> k;
    bool ispos = true;
    bool acceptneg = false;
    int s = 0;
    int idx = 0;
    for (int i = 0; i < n; i++){
        int g; cin >> g;
        if (g > 0) {
            acceptneg = true;
            if (!ispos){
                nums.insert({idx, s});
                absnums.insert({llabs(s), idx});
                s = 0;
                ispos = true;
                idx++;
            }
            s += g;
        } else {
            if (!acceptneg) continue;
            if (ispos){
                nums.insert({idx, s});
                absnums.insert({llabs(s), idx});
                s = 0;
                ispos = false;
                idx++;
            }
            s += g;
        }
    }
    if (s > 0){
        nums.insert({idx, s});
        absnums.insert({s, idx});
    }
    while (nums.size() / 2 + 1 > k){
        auto [s, idx] = *absnums.begin(); absnums.erase(absnums.begin());
        auto itr = nums.lower_bound({idx - 1, 1e18});
        auto [curridx, val] = *itr;
        itr++;
        if (itr != nums.end()){
            auto [idx, nval] = *itr;
            val += nval;
            itr--;
            absnums.erase({llabs(nval), idx});
            nums.erase({idx, nval});
        } else {
            itr--;
        }
        if (itr != nums.begin()){
            itr--;
            auto [idx, pval] = *itr;
            val += pval;
            itr++;
            absnums.erase({llabs(pval), idx});
            nums.erase({idx, pval});
        }
        nums.erase(itr);
        nums.insert({curridx, val});
        if (val <= 0){
            auto itr = nums.find({curridx, val});
            if (itr == nums.begin()){
                nums.erase(itr);
            } else if ((++itr) == nums.end()){
                --itr;
                nums.erase(itr);
            } else {
                absnums.insert({llabs(val), curridx});
            }
        } else {
            absnums.insert({llabs(val), curridx});
        }
    }
    int ans = 0;
    for (auto [idx, num] : nums){
        if (num > 0) ans += num;
    }
    cout << ans << '\n';
}

Compilation message

feast.cpp: In function 'int32_t main()':
feast.cpp:42:32: warning: comparison of integer expressions of different signedness: 'std::set<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   42 |     while (nums.size() / 2 + 1 > k){
      |            ~~~~~~~~~~~~~~~~~~~~^~~

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 31 ms 364 KB Output is correct
2 Correct 33 ms 364 KB Output is correct
3 Correct 33 ms 364 KB Output is correct
4 Correct 34 ms 364 KB Output is correct
5 Correct 33 ms 364 KB Output is correct
6 Correct 32 ms 364 KB Output is correct
7 Correct 34 ms 364 KB Output is correct
8 Correct 32 ms 364 KB Output is correct
9 Correct 32 ms 364 KB Output is correct
10 Correct 32 ms 364 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 364 KB Output is correct
2 Correct 22 ms 364 KB Output is correct
3 Correct 22 ms 492 KB Output is correct
4 Correct 23 ms 1516 KB Output is correct
5 Correct 34 ms 3180 KB Output is correct
6 Correct 22 ms 1516 KB Output is correct
7 Correct 25 ms 1516 KB Output is correct
8 Correct 34 ms 3180 KB Output is correct
9 Correct 33 ms 3200 KB Output is correct
10 Correct 22 ms 1516 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 469 ms 18924 KB Output is correct
2 Correct 479 ms 21760 KB Output is correct
3 Correct 445 ms 21884 KB Output is correct
4 Correct 449 ms 21724 KB Output is correct
5 Correct 446 ms 21792 KB Output is correct
6 Correct 458 ms 21996 KB Output is correct
7 Correct 472 ms 22124 KB Output is correct
8 Correct 445 ms 21828 KB Output is correct
9 Correct 450 ms 22380 KB Output is correct
10 Correct 459 ms 22124 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct

Subtask #5
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 2 ms 492 KB Output is correct
22 Correct 1 ms 492 KB Output is correct
23 Correct 1 ms 492 KB Output is correct
24 Correct 2 ms 492 KB Output is correct
25 Correct 2 ms 492 KB Output is correct
26 Correct 2 ms 492 KB Output is correct
27 Correct 2 ms 492 KB Output is correct
28 Correct 2 ms 492 KB Output is correct
29 Correct 2 ms 492 KB Output is correct
30 Correct 2 ms 492 KB Output is correct

Subtask #7
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 31 ms 364 KB Output is correct
2 Correct 33 ms 364 KB Output is correct
3 Correct 33 ms 364 KB Output is correct
4 Correct 34 ms 364 KB Output is correct
5 Correct 33 ms 364 KB Output is correct
6 Correct 32 ms 364 KB Output is correct
7 Correct 34 ms 364 KB Output is correct
8 Correct 32 ms 364 KB Output is correct
9 Correct 32 ms 364 KB Output is correct
10 Correct 32 ms 364 KB Output is correct
11 Correct 22 ms 364 KB Output is correct
12 Correct 22 ms 364 KB Output is correct
13 Correct 22 ms 492 KB Output is correct
14 Correct 23 ms 1516 KB Output is correct
15 Correct 34 ms 3180 KB Output is correct
16 Correct 22 ms 1516 KB Output is correct
17 Correct 25 ms 1516 KB Output is correct
18 Correct 34 ms 3180 KB Output is correct
19 Correct 33 ms 3200 KB Output is correct
20 Correct 22 ms 1516 KB Output is correct
21 Correct 469 ms 18924 KB Output is correct
22 Correct 479 ms 21760 KB Output is correct
23 Correct 445 ms 21884 KB Output is correct
24 Correct 449 ms 21724 KB Output is correct
25 Correct 446 ms 21792 KB Output is correct
26 Correct 458 ms 21996 KB Output is correct
27 Correct 472 ms 22124 KB Output is correct
28 Correct 445 ms 21828 KB Output is correct
29 Correct 450 ms 22380 KB Output is correct
30 Correct 459 ms 22124 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 1 ms 364 KB Output is correct
37 Correct 1 ms 364 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 1 ms 364 KB Output is correct
40 Correct 1 ms 364 KB Output is correct
41 Correct 1 ms 364 KB Output is correct
42 Correct 1 ms 364 KB Output is correct
43 Correct 1 ms 364 KB Output is correct
44 Correct 1 ms 364 KB Output is correct
45 Correct 1 ms 364 KB Output is correct
46 Correct 1 ms 364 KB Output is correct
47 Correct 1 ms 364 KB Output is correct
48 Correct 1 ms 364 KB Output is correct
49 Correct 1 ms 364 KB Output is correct
50 Correct 1 ms 364 KB Output is correct
51 Correct 2 ms 492 KB Output is correct
52 Correct 1 ms 492 KB Output is correct
53 Correct 1 ms 492 KB Output is correct
54 Correct 2 ms 492 KB Output is correct
55 Correct 2 ms 492 KB Output is correct
56 Correct 2 ms 492 KB Output is correct
57 Correct 2 ms 492 KB Output is correct
58 Correct 2 ms 492 KB Output is correct
59 Correct 2 ms 492 KB Output is correct
60 Correct 2 ms 492 KB Output is correct
61 Correct 290 ms 21484 KB Output is correct
62 Correct 213 ms 22252 KB Output is correct
63 Correct 448 ms 21484 KB Output is correct
64 Correct 308 ms 22124 KB Output is correct
65 Correct 372 ms 21996 KB Output is correct
66 Correct 396 ms 21868 KB Output is correct
67 Correct 377 ms 21612 KB Output is correct
68 Correct 490 ms 21996 KB Output is correct
69 Correct 461 ms 21612 KB Output is correct
70 Correct 448 ms 21536 KB Output is correct