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답안 #889160

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
889160 2023-12-19T04:00:46 Z dimashhh Feast (NOI19_feast) C++17
100 / 100
 291 ms 29552 KB 
#include <bits/stdc++.h>
using namespace std;
const int N = 5e5 + 1, MOD = 998244353;
typedef long long ll;
#define int long long
int n, k, a[N],p[N];
bool ok[N];
vector<ll> b, sum(N);
set<int> pos;
set<pair<ll,ll>> st;
ll res = 0,col = 0;
void del(int i){
    if(i >= 0 && i < n){
        st.erase({abs(sum[i]),i});
        pos.erase(i);
        ok[i] = 1;
        if(sum[i] >= 0){
            res -= sum[i];
            col--;
        }
    }
}
void test()
{
    cin >> n >> k;
    ll lst = 0;
    for (int i = 1; i <= n; i++)
    {
        cin >> a[i];
        ok[i] = (a[i] >= 0);
    }
    ll cur = 0;
    ok[0] = 1;
    for (int i = 1; i <= n; i++)
    {
        if (ok[i] == ok[i - 1])
        {
            cur += a[i];
        }
        else
        {
            if(b.empty() && cur < 0){
            }
            else b.push_back(cur);
            cur = a[i];
        }
    }
    if(cur >= 0) b.push_back(cur);
    n = (int)b.size();
    for(int i = 0;i < n;i++){
        p[i] = i;
        sum[i] = b[i];
        if(b[i] >= 0){
            col++;
            res += b[i];
        }
        pos.insert(i);
        st.insert({abs(b[i]),i});
    }
    int it = 0;
    while(col > k){
        auto [x,y] = (*st.begin());
        st.erase({x,y});
        // cout << x << ' ' << y << ' ' << res << ' ' << col << '\n';
        auto it = pos.upper_bound(y);
        ll nv = sum[y];
        del(y);
        if(it != pos.end()){
            nv += sum[*it];
            del(*it);
        }
        auto it1 = pos.lower_bound(y);
        if(it1 != pos.begin()){
            it1--;
            nv += sum[*it1];
            del(*it1);
        }
        sum[y] = nv;
        if(sum[y] >= 0){
            pos.insert(y);
            st.insert({abs(sum[y]),y});
            col++;
            res += sum[y];
        }else{
            if(!pos.empty() && *pos.begin() < y && *pos.rbegin() > y){
                pos.insert(y);
                st.insert({abs(sum[y]),y});               
            }
        }
    }
    cout << res;
}
main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int T = 1; // cin >> T;
    while (T--)
        test();
}

Compilation message

feast.cpp: In function 'void test()':
feast.cpp:26:8: warning: unused variable 'lst' [-Wunused-variable]
   26 |     ll lst = 0;
      |        ^~~
feast.cpp:60:9: warning: unused variable 'it' [-Wunused-variable]
   60 |     int it = 0;
      |         ^~
feast.cpp: At global scope:
feast.cpp:93:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   93 | main()
      | ^~~~

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 23 ms 8796 KB Output is correct
2 Correct 23 ms 8796 KB Output is correct
3 Correct 24 ms 9052 KB Output is correct
4 Correct 23 ms 9052 KB Output is correct
5 Correct 23 ms 8912 KB Output is correct
6 Correct 24 ms 8764 KB Output is correct
7 Correct 23 ms 8796 KB Output is correct
8 Correct 24 ms 8908 KB Output is correct
9 Correct 23 ms 8844 KB Output is correct
10 Correct 24 ms 9012 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 8792 KB Output is correct
2 Correct 15 ms 9304 KB Output is correct
3 Correct 16 ms 8796 KB Output is correct
4 Correct 16 ms 8796 KB Output is correct
5 Correct 23 ms 8924 KB Output is correct
6 Correct 15 ms 8796 KB Output is correct
7 Correct 16 ms 8924 KB Output is correct
8 Correct 28 ms 8792 KB Output is correct
9 Correct 23 ms 8796 KB Output is correct
10 Correct 17 ms 9048 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 260 ms 26104 KB Output is correct
2 Correct 266 ms 26088 KB Output is correct
3 Correct 282 ms 26188 KB Output is correct
4 Correct 248 ms 25920 KB Output is correct
5 Correct 291 ms 26020 KB Output is correct
6 Correct 282 ms 26208 KB Output is correct
7 Correct 275 ms 26568 KB Output is correct
8 Correct 255 ms 26060 KB Output is correct
9 Correct 259 ms 26388 KB Output is correct
10 Correct 288 ms 26460 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 8284 KB Output is correct
2 Correct 1 ms 8484 KB Output is correct
3 Correct 2 ms 8284 KB Output is correct
4 Correct 2 ms 8284 KB Output is correct
5 Correct 2 ms 8284 KB Output is correct
6 Correct 2 ms 8284 KB Output is correct
7 Correct 2 ms 8280 KB Output is correct
8 Correct 1 ms 8284 KB Output is correct
9 Correct 2 ms 8284 KB Output is correct
10 Correct 2 ms 8284 KB Output is correct

Subtask #5
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 8284 KB Output is correct
2 Correct 1 ms 8484 KB Output is correct
3 Correct 2 ms 8284 KB Output is correct
4 Correct 2 ms 8284 KB Output is correct
5 Correct 2 ms 8284 KB Output is correct
6 Correct 2 ms 8284 KB Output is correct
7 Correct 2 ms 8280 KB Output is correct
8 Correct 1 ms 8284 KB Output is correct
9 Correct 2 ms 8284 KB Output is correct
10 Correct 2 ms 8284 KB Output is correct
11 Correct 2 ms 8284 KB Output is correct
12 Correct 2 ms 8280 KB Output is correct
13 Correct 2 ms 8284 KB Output is correct
14 Correct 2 ms 8496 KB Output is correct
15 Correct 2 ms 8284 KB Output is correct
16 Correct 2 ms 8284 KB Output is correct
17 Correct 2 ms 8284 KB Output is correct
18 Correct 2 ms 8284 KB Output is correct
19 Correct 2 ms 8284 KB Output is correct
20 Correct 2 ms 8516 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 8284 KB Output is correct
2 Correct 1 ms 8484 KB Output is correct
3 Correct 2 ms 8284 KB Output is correct
4 Correct 2 ms 8284 KB Output is correct
5 Correct 2 ms 8284 KB Output is correct
6 Correct 2 ms 8284 KB Output is correct
7 Correct 2 ms 8280 KB Output is correct
8 Correct 1 ms 8284 KB Output is correct
9 Correct 2 ms 8284 KB Output is correct
10 Correct 2 ms 8284 KB Output is correct
11 Correct 2 ms 8284 KB Output is correct
12 Correct 2 ms 8280 KB Output is correct
13 Correct 2 ms 8284 KB Output is correct
14 Correct 2 ms 8496 KB Output is correct
15 Correct 2 ms 8284 KB Output is correct
16 Correct 2 ms 8284 KB Output is correct
17 Correct 2 ms 8284 KB Output is correct
18 Correct 2 ms 8284 KB Output is correct
19 Correct 2 ms 8284 KB Output is correct
20 Correct 2 ms 8516 KB Output is correct
21 Correct 2 ms 8540 KB Output is correct
22 Correct 2 ms 8540 KB Output is correct
23 Correct 2 ms 8540 KB Output is correct
24 Correct 2 ms 8540 KB Output is correct
25 Correct 2 ms 8540 KB Output is correct
26 Correct 2 ms 8540 KB Output is correct
27 Correct 3 ms 8496 KB Output is correct
28 Correct 2 ms 8540 KB Output is correct
29 Correct 2 ms 8536 KB Output is correct
30 Correct 4 ms 8540 KB Output is correct

Subtask #7
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 23 ms 8796 KB Output is correct
2 Correct 23 ms 8796 KB Output is correct
3 Correct 24 ms 9052 KB Output is correct
4 Correct 23 ms 9052 KB Output is correct
5 Correct 23 ms 8912 KB Output is correct
6 Correct 24 ms 8764 KB Output is correct
7 Correct 23 ms 8796 KB Output is correct
8 Correct 24 ms 8908 KB Output is correct
9 Correct 23 ms 8844 KB Output is correct
10 Correct 24 ms 9012 KB Output is correct
11 Correct 16 ms 8792 KB Output is correct
12 Correct 15 ms 9304 KB Output is correct
13 Correct 16 ms 8796 KB Output is correct
14 Correct 16 ms 8796 KB Output is correct
15 Correct 23 ms 8924 KB Output is correct
16 Correct 15 ms 8796 KB Output is correct
17 Correct 16 ms 8924 KB Output is correct
18 Correct 28 ms 8792 KB Output is correct
19 Correct 23 ms 8796 KB Output is correct
20 Correct 17 ms 9048 KB Output is correct
21 Correct 260 ms 26104 KB Output is correct
22 Correct 266 ms 26088 KB Output is correct
23 Correct 282 ms 26188 KB Output is correct
24 Correct 248 ms 25920 KB Output is correct
25 Correct 291 ms 26020 KB Output is correct
26 Correct 282 ms 26208 KB Output is correct
27 Correct 275 ms 26568 KB Output is correct
28 Correct 255 ms 26060 KB Output is correct
29 Correct 259 ms 26388 KB Output is correct
30 Correct 288 ms 26460 KB Output is correct
31 Correct 2 ms 8284 KB Output is correct
32 Correct 1 ms 8484 KB Output is correct
33 Correct 2 ms 8284 KB Output is correct
34 Correct 2 ms 8284 KB Output is correct
35 Correct 2 ms 8284 KB Output is correct
36 Correct 2 ms 8284 KB Output is correct
37 Correct 2 ms 8280 KB Output is correct
38 Correct 1 ms 8284 KB Output is correct
39 Correct 2 ms 8284 KB Output is correct
40 Correct 2 ms 8284 KB Output is correct
41 Correct 2 ms 8284 KB Output is correct
42 Correct 2 ms 8280 KB Output is correct
43 Correct 2 ms 8284 KB Output is correct
44 Correct 2 ms 8496 KB Output is correct
45 Correct 2 ms 8284 KB Output is correct
46 Correct 2 ms 8284 KB Output is correct
47 Correct 2 ms 8284 KB Output is correct
48 Correct 2 ms 8284 KB Output is correct
49 Correct 2 ms 8284 KB Output is correct
50 Correct 2 ms 8516 KB Output is correct
51 Correct 2 ms 8540 KB Output is correct
52 Correct 2 ms 8540 KB Output is correct
53 Correct 2 ms 8540 KB Output is correct
54 Correct 2 ms 8540 KB Output is correct
55 Correct 2 ms 8540 KB Output is correct
56 Correct 2 ms 8540 KB Output is correct
57 Correct 3 ms 8496 KB Output is correct
58 Correct 2 ms 8540 KB Output is correct
59 Correct 2 ms 8536 KB Output is correct
60 Correct 4 ms 8540 KB Output is correct
61 Correct 154 ms 28884 KB Output is correct
62 Correct 109 ms 29552 KB Output is correct
63 Correct 257 ms 28876 KB Output is correct
64 Correct 158 ms 29388 KB Output is correct
65 Correct 212 ms 29388 KB Output is correct
66 Correct 214 ms 29236 KB Output is correct
67 Correct 203 ms 28876 KB Output is correct
68 Correct 253 ms 29388 KB Output is correct
69 Correct 261 ms 28816 KB Output is correct
70 Correct 241 ms 28872 KB Output is correct