oj.uz

답안 #998236

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
998236 2024-06-13T12:16:37 Z LOLOLO Feast (NOI19_feast) C++17
30 / 100
 156 ms 19764 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
 
#define           f     first
#define           s     second
#define           pb    push_back
#define           ep    emplace
#define           eb    emplace_back
#define           lb    lower_bound
#define           ub    upper_bound
#define       all(x)    x.begin(), x.end()
#define      rall(x)    x.rbegin(), x.rend()
#define   uniquev(v)    sort(all(v)), (v).resize(unique(all(v)) - (v).begin())
#define     mem(f,x)    memset(f , x , sizeof(f))
#define        sz(x)    (ll)(x).size()
#define  __lcm(a, b)    (1ll * ((a) / __gcd((a), (b))) * (b))
#define          mxx    *max_element
#define          mnn    *min_element
#define    cntbit(x)    __builtin_popcountll(x)
#define       len(x)    (int)(x.length())
 
const int N = 3e5 + 10;
int p[N], sz[N], l[N], r[N], a[N];
ll val[N];
 
set <pair <ll, ll>> st;
 
int get(int x) {
    return p[x] ? get(p[x]) : x;
}

int same(int a, int b) {
    a = get(a), b = get(b);
    return a == b;
}
 
void unite(int a, int b) {
    a = get(a), b = get(b);
    if (a == b)
        return;
 
    if (sz[a] < sz[b])
        swap(a, b);
 
    sz[a] += sz[b];
    p[b] = a;
    l[a] = min(l[a], l[b]);
    r[a] = max(r[a], r[b]);
    val[a] += val[b];
}
 
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
 
    int n, k;
    cin >> n >> k;
 
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
        sz[i] = 1;
        l[i] = r[i] = i;
    }
 
    while (a[n] <= 0 && n)  
        n--;
 
    if (n == 0) {
        cout << 0 << '\n';
        return 0;
    } 
 
    int ft = 1;
    while (a[ft] <= 0)
        ft++;
 
    for (int j = ft; j <= n; j++) 
        a[j - ft + 1] = a[j];
 
    for (int i = 1; i <= n; i++) {
        val[i] = a[i];
    }
 
    for (int i = 1; i < n; i++) {
        if (bool(a[i] >= 0) == bool(a[i + 1] >= 0))
            unite(i, i + 1);
    }
 
    for (int i = 1; i <= n; i++) {
        if (get(i) == i) {
            st.insert({abs(val[i]), i});
        }
    }
 
    while (sz(st) > k * 2) {
        auto it = *st.begin();
        st.erase(it);
        int p = get(it.s);
 
        if (l[p] > 1) {
            int x = get(l[p] - 1);
            st.erase({abs(val[x]), x});
            unite(p, x);
        }

        if (r[p] < n) {
            int x = get(r[p] + 1);
            st.erase({abs(val[x]), x});
            unite(p, x);
        }
 
        p = get(p);
        if ((same(p, 1) == 0 && same(p, n) == 0) || (val[p] > 0))
            st.insert({abs(val[p]), p});
    }
 
    ll ans = 0;
    while (sz(st)) {
        auto it = *st.begin();
        st.erase(it);
        int p = it.s;
        ans += max((ll)0, val[p]);
    }
 
    cout << ans << '\n';
    return 0;
 
}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 10088 KB Output is correct
2 Correct 24 ms 10320 KB Output is correct
3 Correct 24 ms 10324 KB Output is correct
4 Correct 24 ms 10356 KB Output is correct
5 Correct 25 ms 10172 KB Output is correct
6 Correct 23 ms 9976 KB Output is correct
7 Correct 31 ms 10064 KB Output is correct
8 Correct 27 ms 10204 KB Output is correct
9 Correct 23 ms 10012 KB Output is correct
10 Correct 23 ms 10152 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 9308 KB Output is correct
2 Correct 16 ms 9300 KB Output is correct
3 Correct 15 ms 9308 KB Output is correct
4 Correct 16 ms 9308 KB Output is correct
5 Correct 23 ms 10068 KB Output is correct
6 Correct 15 ms 9276 KB Output is correct
7 Correct 16 ms 9296 KB Output is correct
8 Correct 23 ms 10404 KB Output is correct
9 Correct 25 ms 10052 KB Output is correct
10 Correct 18 ms 9352 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 154 ms 19632 KB Output is correct
2 Correct 146 ms 19284 KB Output is correct
3 Correct 150 ms 19596 KB Output is correct
4 Correct 149 ms 19368 KB Output is correct
5 Correct 143 ms 19536 KB Output is correct
6 Correct 156 ms 19540 KB Output is correct
7 Correct 141 ms 19536 KB Output is correct
8 Correct 138 ms 19536 KB Output is correct
9 Correct 135 ms 19764 KB Output is correct
10 Correct 148 ms 19536 KB Output is correct

Subtask #4
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Incorrect 1 ms 4444 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Incorrect 1 ms 4444 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Incorrect 1 ms 4444 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 10088 KB Output is correct
2 Correct 24 ms 10320 KB Output is correct
3 Correct 24 ms 10324 KB Output is correct
4 Correct 24 ms 10356 KB Output is correct
5 Correct 25 ms 10172 KB Output is correct
6 Correct 23 ms 9976 KB Output is correct
7 Correct 31 ms 10064 KB Output is correct
8 Correct 27 ms 10204 KB Output is correct
9 Correct 23 ms 10012 KB Output is correct
10 Correct 23 ms 10152 KB Output is correct
11 Correct 17 ms 9308 KB Output is correct
12 Correct 16 ms 9300 KB Output is correct
13 Correct 15 ms 9308 KB Output is correct
14 Correct 16 ms 9308 KB Output is correct
15 Correct 23 ms 10068 KB Output is correct
16 Correct 15 ms 9276 KB Output is correct
17 Correct 16 ms 9296 KB Output is correct
18 Correct 23 ms 10404 KB Output is correct
19 Correct 25 ms 10052 KB Output is correct
20 Correct 18 ms 9352 KB Output is correct
21 Correct 154 ms 19632 KB Output is correct
22 Correct 146 ms 19284 KB Output is correct
23 Correct 150 ms 19596 KB Output is correct
24 Correct 149 ms 19368 KB Output is correct
25 Correct 143 ms 19536 KB Output is correct
26 Correct 156 ms 19540 KB Output is correct
27 Correct 141 ms 19536 KB Output is correct
28 Correct 138 ms 19536 KB Output is correct
29 Correct 135 ms 19764 KB Output is correct
30 Correct 148 ms 19536 KB Output is correct
31 Correct 1 ms 4444 KB Output is correct
32 Incorrect 1 ms 4444 KB Output isn't correct
33 Halted 0 ms 0 KB -