oj.uz

답안 #985724

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
985724 2024-05-18T15:03:54 Z gggkik Feast (NOI19_feast) C++14
71 / 100
 126 ms 153120 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<ll,ll>;
const ll inf = 1e18;
const int MXN = 3e5+5;
struct node{
    pii l, r; // v, pos
    pair<ll,pii> m;
    ll a;
}t[MXN<<2], nt[MXN<<2];
int A[MXN], lz[MXN];
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:38:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   38 |     int mid = s+e>>1;
      |               ~^~
feast.cpp: In function 'void init(int, int, int)':
feast.cpp:50:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   50 |     int mid = s+e>>1;
      |               ~^~
feast.cpp: In function 'int main()':
feast.cpp:62:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   62 |         auto [l,r] = t[1].m.second;
      |              ^

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 67 ms 152656 KB Output is correct
2 Correct 63 ms 152868 KB Output is correct
3 Correct 59 ms 152660 KB Output is correct
4 Correct 60 ms 152912 KB Output is correct
5 Correct 58 ms 152656 KB Output is correct
6 Correct 56 ms 152836 KB Output is correct
7 Correct 57 ms 152924 KB Output is correct
8 Correct 58 ms 152924 KB Output is correct
9 Correct 57 ms 152884 KB Output is correct
10 Correct 70 ms 152900 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 59 ms 152920 KB Output is correct
2 Correct 53 ms 152864 KB Output is correct
3 Correct 50 ms 152924 KB Output is correct
4 Correct 49 ms 152924 KB Output is correct
5 Correct 57 ms 152668 KB Output is correct
6 Correct 49 ms 152656 KB Output is correct
7 Correct 61 ms 152828 KB Output is correct
8 Correct 60 ms 152668 KB Output is correct
9 Correct 56 ms 152924 KB Output is correct
10 Correct 51 ms 152912 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 62 ms 152924 KB Output is correct
2 Correct 70 ms 152912 KB Output is correct
3 Correct 64 ms 152904 KB Output is correct
4 Correct 61 ms 152912 KB Output is correct
5 Correct 65 ms 152916 KB Output is correct
6 Correct 65 ms 152912 KB Output is correct
7 Correct 64 ms 152912 KB Output is correct
8 Correct 62 ms 152924 KB Output is correct
9 Correct 64 ms 152904 KB Output is correct
10 Correct 108 ms 152916 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 153120 KB Output is correct
2 Correct 22 ms 152656 KB Output is correct
3 Correct 22 ms 152656 KB Output is correct
4 Correct 23 ms 152668 KB Output is correct
5 Correct 22 ms 152668 KB Output is correct
6 Correct 22 ms 152756 KB Output is correct
7 Correct 23 ms 152880 KB Output is correct
8 Correct 22 ms 152924 KB Output is correct
9 Correct 22 ms 152808 KB Output is correct
10 Correct 22 ms 152768 KB Output is correct

Subtask #5
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 153120 KB Output is correct
2 Correct 22 ms 152656 KB Output is correct
3 Correct 22 ms 152656 KB Output is correct
4 Correct 23 ms 152668 KB Output is correct
5 Correct 22 ms 152668 KB Output is correct
6 Correct 22 ms 152756 KB Output is correct
7 Correct 23 ms 152880 KB Output is correct
8 Correct 22 ms 152924 KB Output is correct
9 Correct 22 ms 152808 KB Output is correct
10 Correct 22 ms 152768 KB Output is correct
11 Correct 22 ms 152852 KB Output is correct
12 Correct 23 ms 152808 KB Output is correct
13 Correct 22 ms 152924 KB Output is correct
14 Correct 22 ms 152836 KB Output is correct
15 Correct 24 ms 152768 KB Output is correct
16 Correct 22 ms 152660 KB Output is correct
17 Correct 23 ms 152660 KB Output is correct
18 Correct 22 ms 152876 KB Output is correct
19 Correct 22 ms 152856 KB Output is correct
20 Correct 22 ms 152768 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 153120 KB Output is correct
2 Correct 22 ms 152656 KB Output is correct
3 Correct 22 ms 152656 KB Output is correct
4 Correct 23 ms 152668 KB Output is correct
5 Correct 22 ms 152668 KB Output is correct
6 Correct 22 ms 152756 KB Output is correct
7 Correct 23 ms 152880 KB Output is correct
8 Correct 22 ms 152924 KB Output is correct
9 Correct 22 ms 152808 KB Output is correct
10 Correct 22 ms 152768 KB Output is correct
11 Correct 22 ms 152852 KB Output is correct
12 Correct 23 ms 152808 KB Output is correct
13 Correct 22 ms 152924 KB Output is correct
14 Correct 22 ms 152836 KB Output is correct
15 Correct 24 ms 152768 KB Output is correct
16 Correct 22 ms 152660 KB Output is correct
17 Correct 23 ms 152660 KB Output is correct
18 Correct 22 ms 152876 KB Output is correct
19 Correct 22 ms 152856 KB Output is correct
20 Correct 22 ms 152768 KB Output is correct
21 Correct 22 ms 152856 KB Output is correct
22 Correct 22 ms 152924 KB Output is correct
23 Correct 23 ms 152804 KB Output is correct
24 Correct 23 ms 152768 KB Output is correct
25 Correct 24 ms 152852 KB Output is correct
26 Correct 22 ms 152924 KB Output is correct
27 Correct 22 ms 152880 KB Output is correct
28 Correct 22 ms 152924 KB Output is correct
29 Correct 22 ms 152816 KB Output is correct
30 Correct 22 ms 152844 KB Output is correct

Subtask #7
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 67 ms 152656 KB Output is correct
2 Correct 63 ms 152868 KB Output is correct
3 Correct 59 ms 152660 KB Output is correct
4 Correct 60 ms 152912 KB Output is correct
5 Correct 58 ms 152656 KB Output is correct
6 Correct 56 ms 152836 KB Output is correct
7 Correct 57 ms 152924 KB Output is correct
8 Correct 58 ms 152924 KB Output is correct
9 Correct 57 ms 152884 KB Output is correct
10 Correct 70 ms 152900 KB Output is correct
11 Correct 59 ms 152920 KB Output is correct
12 Correct 53 ms 152864 KB Output is correct
13 Correct 50 ms 152924 KB Output is correct
14 Correct 49 ms 152924 KB Output is correct
15 Correct 57 ms 152668 KB Output is correct
16 Correct 49 ms 152656 KB Output is correct
17 Correct 61 ms 152828 KB Output is correct
18 Correct 60 ms 152668 KB Output is correct
19 Correct 56 ms 152924 KB Output is correct
20 Correct 51 ms 152912 KB Output is correct
21 Correct 62 ms 152924 KB Output is correct
22 Correct 70 ms 152912 KB Output is correct
23 Correct 64 ms 152904 KB Output is correct
24 Correct 61 ms 152912 KB Output is correct
25 Correct 65 ms 152916 KB Output is correct
26 Correct 65 ms 152912 KB Output is correct
27 Correct 64 ms 152912 KB Output is correct
28 Correct 62 ms 152924 KB Output is correct
29 Correct 64 ms 152904 KB Output is correct
30 Correct 108 ms 152916 KB Output is correct
31 Correct 22 ms 153120 KB Output is correct
32 Correct 22 ms 152656 KB Output is correct
33 Correct 22 ms 152656 KB Output is correct
34 Correct 23 ms 152668 KB Output is correct
35 Correct 22 ms 152668 KB Output is correct
36 Correct 22 ms 152756 KB Output is correct
37 Correct 23 ms 152880 KB Output is correct
38 Correct 22 ms 152924 KB Output is correct
39 Correct 22 ms 152808 KB Output is correct
40 Correct 22 ms 152768 KB Output is correct
41 Correct 22 ms 152852 KB Output is correct
42 Correct 23 ms 152808 KB Output is correct
43 Correct 22 ms 152924 KB Output is correct
44 Correct 22 ms 152836 KB Output is correct
45 Correct 24 ms 152768 KB Output is correct
46 Correct 22 ms 152660 KB Output is correct
47 Correct 23 ms 152660 KB Output is correct
48 Correct 22 ms 152876 KB Output is correct
49 Correct 22 ms 152856 KB Output is correct
50 Correct 22 ms 152768 KB Output is correct
51 Correct 22 ms 152856 KB Output is correct
52 Correct 22 ms 152924 KB Output is correct
53 Correct 23 ms 152804 KB Output is correct
54 Correct 23 ms 152768 KB Output is correct
55 Correct 24 ms 152852 KB Output is correct
56 Correct 22 ms 152924 KB Output is correct
57 Correct 22 ms 152880 KB Output is correct
58 Correct 22 ms 152924 KB Output is correct
59 Correct 22 ms 152816 KB Output is correct
60 Correct 22 ms 152844 KB Output is correct
61 Incorrect 126 ms 153076 KB Output isn't correct
62 Halted 0 ms 0 KB -