oj.uz

답안 #985722

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
985722 2024-05-18T15:01:39 Z gggkik Feast (NOI19_feast) C++17
71 / 100
 100 ms 136448 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pli = pair<ll,int>;
using pii = pair<int,int>;
using pll = pair<ll,ll>;
const ll inf = 1e18;
const int MXN = 3e5+5;
struct node{
    pli l, r; // v, pos
    pair<ll,pii> m;
    ll a;
}t[MXN<<2], nt[MXN<<2];
bool lz[MXN];
int A[MXN];
node z = {{-inf,0},{-inf,0},{-inf,{0,0}},0};
node operator+(const node &i, const node &j){
    node k;
    k.l = max(i.l,{i.a+j.l.first,j.l.second});
    k.r = max(j.r,{i.r.first+j.a,i.r.second});
    k.m = max(i.m,j.m);
    k.m = max(k.m,{i.r.first+j.l.first,{i.r.second,j.l.second}});
    k.a = i.a+j.a;
    return k;
}
void push(int x,int s,int e){
    if(!lz[x]) return;
    swap(t[x],nt[x]);
    if(s!=e){
        lz[x*2] ^= lz[x];
        lz[x*2+1] ^= lz[x];
    }
    lz[x] = 0;
}
void upd(int x,int s,int e,int l,int r){
    push(x,s,e);
    if(e<l || r<s) return;
    if(l<=s && e<=r) {
        lz[x]^=1;
        return push(x,s,e);
    }
    int mid = s+e>>1;
    upd(x*2,s,mid,l,r), upd(x*2+1,mid+1,e,l,r);
    t[x] = t[x*2]+t[x*2+1];
    nt[x] = nt[x*2]+nt[x*2+1];   
}
void init(int x,int s,int e){
    if(s==e) {
        ll v = A[s];
        t[x] = {{v,s},{v,s},{v,{s,s}},v};
        nt[x] = {{-v,s},{-v,s},{-v,{s,s}},-v};
        return;
    }
    int mid = s+e>>1;
    init(x*2,s,mid), init(x*2+1,mid+1,e);
    t[x] = t[x*2]+t[x*2+1];
    nt[x] = nt[x*2]+nt[x*2+1];
}
int main() {
    cin.tie(0)->sync_with_stdio(0);
    int n, k; cin >> n >> k;
    for(int i = 1;i<=n;i++) cin >> A[i];
    init(1,1,n);
    ll ans = 0;
    for(int i = 0;i<k;i++){
        auto [l,r] = t[1].m.second;
        ll v = t[1].m.first;
        if(v<=0) break;
        ans += v;
        upd(1,1,n,l,r);
    }
    cout << ans;
}

Compilation message

feast.cpp: In function 'void upd(int, int, int, int, int)':
feast.cpp:42:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   42 |     int mid = s+e>>1;
      |               ~^~
feast.cpp: In function 'void init(int, int, int)':
feast.cpp:54:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   54 |     int mid = s+e>>1;
      |               ~^~

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 100 ms 136056 KB Output is correct
2 Correct 59 ms 136020 KB Output is correct
3 Correct 59 ms 136224 KB Output is correct
4 Correct 79 ms 136204 KB Output is correct
5 Correct 62 ms 136212 KB Output is correct
6 Correct 59 ms 136076 KB Output is correct
7 Correct 56 ms 136100 KB Output is correct
8 Correct 57 ms 136016 KB Output is correct
9 Correct 59 ms 136208 KB Output is correct
10 Correct 57 ms 136080 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 51 ms 134484 KB Output is correct
2 Correct 51 ms 134488 KB Output is correct
3 Correct 48 ms 134280 KB Output is correct
4 Correct 63 ms 134492 KB Output is correct
5 Correct 59 ms 135988 KB Output is correct
6 Correct 50 ms 134432 KB Output is correct
7 Correct 62 ms 134536 KB Output is correct
8 Correct 63 ms 136276 KB Output is correct
9 Correct 57 ms 136020 KB Output is correct
10 Correct 51 ms 134484 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 62 ms 136276 KB Output is correct
2 Correct 70 ms 136212 KB Output is correct
3 Correct 73 ms 136176 KB Output is correct
4 Correct 72 ms 136388 KB Output is correct
5 Correct 61 ms 136420 KB Output is correct
6 Correct 63 ms 136440 KB Output is correct
7 Correct 61 ms 136272 KB Output is correct
8 Correct 67 ms 136424 KB Output is correct
9 Correct 62 ms 136432 KB Output is correct
10 Correct 61 ms 136448 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 133520 KB Output is correct
2 Correct 22 ms 133060 KB Output is correct
3 Correct 22 ms 133212 KB Output is correct
4 Correct 25 ms 133112 KB Output is correct
5 Correct 20 ms 133212 KB Output is correct
6 Correct 22 ms 133456 KB Output is correct
7 Correct 23 ms 133204 KB Output is correct
8 Correct 20 ms 133208 KB Output is correct
9 Correct 21 ms 133212 KB Output is correct
10 Correct 21 ms 133212 KB Output is correct

Subtask #5
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 133520 KB Output is correct
2 Correct 22 ms 133060 KB Output is correct
3 Correct 22 ms 133212 KB Output is correct
4 Correct 25 ms 133112 KB Output is correct
5 Correct 20 ms 133212 KB Output is correct
6 Correct 22 ms 133456 KB Output is correct
7 Correct 23 ms 133204 KB Output is correct
8 Correct 20 ms 133208 KB Output is correct
9 Correct 21 ms 133212 KB Output is correct
10 Correct 21 ms 133212 KB Output is correct
11 Correct 22 ms 133108 KB Output is correct
12 Correct 22 ms 133120 KB Output is correct
13 Correct 22 ms 133156 KB Output is correct
14 Correct 20 ms 133132 KB Output is correct
15 Correct 22 ms 133212 KB Output is correct
16 Correct 20 ms 133212 KB Output is correct
17 Correct 21 ms 133200 KB Output is correct
18 Correct 21 ms 133212 KB Output is correct
19 Correct 21 ms 133212 KB Output is correct
20 Correct 21 ms 133068 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 133520 KB Output is correct
2 Correct 22 ms 133060 KB Output is correct
3 Correct 22 ms 133212 KB Output is correct
4 Correct 25 ms 133112 KB Output is correct
5 Correct 20 ms 133212 KB Output is correct
6 Correct 22 ms 133456 KB Output is correct
7 Correct 23 ms 133204 KB Output is correct
8 Correct 20 ms 133208 KB Output is correct
9 Correct 21 ms 133212 KB Output is correct
10 Correct 21 ms 133212 KB Output is correct
11 Correct 22 ms 133108 KB Output is correct
12 Correct 22 ms 133120 KB Output is correct
13 Correct 22 ms 133156 KB Output is correct
14 Correct 20 ms 133132 KB Output is correct
15 Correct 22 ms 133212 KB Output is correct
16 Correct 20 ms 133212 KB Output is correct
17 Correct 21 ms 133200 KB Output is correct
18 Correct 21 ms 133212 KB Output is correct
19 Correct 21 ms 133212 KB Output is correct
20 Correct 21 ms 133068 KB Output is correct
21 Correct 21 ms 133212 KB Output is correct
22 Correct 21 ms 133132 KB Output is correct
23 Correct 21 ms 133200 KB Output is correct
24 Correct 21 ms 133144 KB Output is correct
25 Correct 22 ms 133284 KB Output is correct
26 Correct 23 ms 133200 KB Output is correct
27 Correct 24 ms 133208 KB Output is correct
28 Correct 22 ms 133260 KB Output is correct
29 Correct 22 ms 133132 KB Output is correct
30 Correct 20 ms 133212 KB Output is correct

Subtask #7
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 100 ms 136056 KB Output is correct
2 Correct 59 ms 136020 KB Output is correct
3 Correct 59 ms 136224 KB Output is correct
4 Correct 79 ms 136204 KB Output is correct
5 Correct 62 ms 136212 KB Output is correct
6 Correct 59 ms 136076 KB Output is correct
7 Correct 56 ms 136100 KB Output is correct
8 Correct 57 ms 136016 KB Output is correct
9 Correct 59 ms 136208 KB Output is correct
10 Correct 57 ms 136080 KB Output is correct
11 Correct 51 ms 134484 KB Output is correct
12 Correct 51 ms 134488 KB Output is correct
13 Correct 48 ms 134280 KB Output is correct
14 Correct 63 ms 134492 KB Output is correct
15 Correct 59 ms 135988 KB Output is correct
16 Correct 50 ms 134432 KB Output is correct
17 Correct 62 ms 134536 KB Output is correct
18 Correct 63 ms 136276 KB Output is correct
19 Correct 57 ms 136020 KB Output is correct
20 Correct 51 ms 134484 KB Output is correct
21 Correct 62 ms 136276 KB Output is correct
22 Correct 70 ms 136212 KB Output is correct
23 Correct 73 ms 136176 KB Output is correct
24 Correct 72 ms 136388 KB Output is correct
25 Correct 61 ms 136420 KB Output is correct
26 Correct 63 ms 136440 KB Output is correct
27 Correct 61 ms 136272 KB Output is correct
28 Correct 67 ms 136424 KB Output is correct
29 Correct 62 ms 136432 KB Output is correct
30 Correct 61 ms 136448 KB Output is correct
31 Correct 22 ms 133520 KB Output is correct
32 Correct 22 ms 133060 KB Output is correct
33 Correct 22 ms 133212 KB Output is correct
34 Correct 25 ms 133112 KB Output is correct
35 Correct 20 ms 133212 KB Output is correct
36 Correct 22 ms 133456 KB Output is correct
37 Correct 23 ms 133204 KB Output is correct
38 Correct 20 ms 133208 KB Output is correct
39 Correct 21 ms 133212 KB Output is correct
40 Correct 21 ms 133212 KB Output is correct
41 Correct 22 ms 133108 KB Output is correct
42 Correct 22 ms 133120 KB Output is correct
43 Correct 22 ms 133156 KB Output is correct
44 Correct 20 ms 133132 KB Output is correct
45 Correct 22 ms 133212 KB Output is correct
46 Correct 20 ms 133212 KB Output is correct
47 Correct 21 ms 133200 KB Output is correct
48 Correct 21 ms 133212 KB Output is correct
49 Correct 21 ms 133212 KB Output is correct
50 Correct 21 ms 133068 KB Output is correct
51 Correct 21 ms 133212 KB Output is correct
52 Correct 21 ms 133132 KB Output is correct
53 Correct 21 ms 133200 KB Output is correct
54 Correct 21 ms 133144 KB Output is correct
55 Correct 22 ms 133284 KB Output is correct
56 Correct 23 ms 133200 KB Output is correct
57 Correct 24 ms 133208 KB Output is correct
58 Correct 22 ms 133260 KB Output is correct
59 Correct 22 ms 133132 KB Output is correct
60 Correct 20 ms 133212 KB Output is correct
61 Incorrect 80 ms 136384 KB Output isn't correct
62 Halted 0 ms 0 KB -