oj.uz

답안 #998274

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
998274 2024-06-13T13:18:41 Z LOLOLO Feast (NOI19_feast) C++17
30 / 100
 157 ms 20820 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);
    }

    ll cc = 0;
    for (int i = 1; i <= n; i++) {
        if (get(i) == i) {
            cc += val[i] > 0;
            st.insert({abs(val[i]), i});
        }
    }
 
    while (cc > k) {
        auto it = *st.begin();
        st.erase(it);
        int p = get(it.s);

        cc -= val[p] > 0;
        if (l[p] > 1) {
            int x = get(l[p] - 1);
            st.erase({abs(val[x]), x});
            cc -= val[x] > 0;
            unite(p, x);
        }

        if (r[p] < n) {
            int x = get(r[p] + 1);
            st.erase({abs(val[x]), x});
            cc -= val[x] > 0;
            unite(p, x);
        }
 
        p = get(p);
        if ((same(p, 1) == 0 && same(p, n) == 0) || (val[p] > 0)) {
            st.insert({abs(val[p]), p});
            cc += val[p] > 0;
        } else {
            val[p] = 0;
        }
    }
 
    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 32 ms 11348 KB Output is correct
2 Correct 34 ms 11088 KB Output is correct
3 Correct 24 ms 11100 KB Output is correct
4 Correct 24 ms 11068 KB Output is correct
5 Correct 25 ms 11028 KB Output is correct
6 Correct 24 ms 11356 KB Output is correct
7 Correct 24 ms 11356 KB Output is correct
8 Correct 31 ms 11124 KB Output is correct
9 Correct 30 ms 11348 KB Output is correct
10 Correct 23 ms 11092 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 9564 KB Output is correct
2 Correct 17 ms 9820 KB Output is correct
3 Correct 18 ms 9552 KB Output is correct
4 Correct 16 ms 9556 KB Output is correct
5 Correct 23 ms 11352 KB Output is correct
6 Correct 25 ms 9564 KB Output is correct
7 Correct 16 ms 9564 KB Output is correct
8 Correct 23 ms 11040 KB Output is correct
9 Correct 23 ms 11392 KB Output is correct
10 Correct 15 ms 9564 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 157 ms 20564 KB Output is correct
2 Correct 136 ms 20232 KB Output is correct
3 Correct 140 ms 20560 KB Output is correct
4 Correct 140 ms 20592 KB Output is correct
5 Correct 145 ms 20308 KB Output is correct
6 Correct 133 ms 20564 KB Output is correct
7 Correct 155 ms 20564 KB Output is correct
8 Correct 142 ms 20344 KB Output is correct
9 Correct 141 ms 20820 KB Output is correct
10 Correct 144 ms 20776 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 4564 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 4564 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 4564 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 32 ms 11348 KB Output is correct
2 Correct 34 ms 11088 KB Output is correct
3 Correct 24 ms 11100 KB Output is correct
4 Correct 24 ms 11068 KB Output is correct
5 Correct 25 ms 11028 KB Output is correct
6 Correct 24 ms 11356 KB Output is correct
7 Correct 24 ms 11356 KB Output is correct
8 Correct 31 ms 11124 KB Output is correct
9 Correct 30 ms 11348 KB Output is correct
10 Correct 23 ms 11092 KB Output is correct
11 Correct 16 ms 9564 KB Output is correct
12 Correct 17 ms 9820 KB Output is correct
13 Correct 18 ms 9552 KB Output is correct
14 Correct 16 ms 9556 KB Output is correct
15 Correct 23 ms 11352 KB Output is correct
16 Correct 25 ms 9564 KB Output is correct
17 Correct 16 ms 9564 KB Output is correct
18 Correct 23 ms 11040 KB Output is correct
19 Correct 23 ms 11392 KB Output is correct
20 Correct 15 ms 9564 KB Output is correct
21 Correct 157 ms 20564 KB Output is correct
22 Correct 136 ms 20232 KB Output is correct
23 Correct 140 ms 20560 KB Output is correct
24 Correct 140 ms 20592 KB Output is correct
25 Correct 145 ms 20308 KB Output is correct
26 Correct 133 ms 20564 KB Output is correct
27 Correct 155 ms 20564 KB Output is correct
28 Correct 142 ms 20344 KB Output is correct
29 Correct 141 ms 20820 KB Output is correct
30 Correct 144 ms 20776 KB Output is correct
31 Correct 1 ms 4444 KB Output is correct
32 Incorrect 1 ms 4564 KB Output isn't correct
33 Halted 0 ms 0 KB -