Submission #1169869

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1169869	2025-03-19 09:01:37	MinhKien	Building Bridges (CEOI17_building)	C++20	0 / 100	51 ms	65348 KiB

building

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include <iostream>
using namespace std;
#define ll long long
const int N = 1e5 + 10;
const int M = 1e6 + 10;
const ll INF = 1e18;
int n;
ll h[N], w[N], dp[N];
struct lichao {
    struct line {
        ll a, b;
        line() {a = b = INF;}
        line(ll A, ll B) {a = A, b = B;}
        ll calc(ll val) {return a == INF ? INF : a * val + b;}
        ll slope() {return a;}
    } st[M << 2];
    void update(int l, int r, line f, int id) {
        int m = (l + r) >> 1;
        if (st[id].calc(m) > f.calc(m)) swap(st[id], f);
        if (l == r) return;
        if (f.slope() < st[id].slope()) update(m + 1, r, f, id << 1);
        if (f.slope() > st[id].slope()) update(l, m, f, id << 1 | 1);
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

• Subtask 1: 0 / 30
• Subtask 2: 0 / 30
• Subtask 3: 0 / 40