Submission #1134260

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1134260	2025-01-10 03:50:05	Luvidi	Safety (NOI18_safety)	C++20	0 / 100	63 ms	7580 KiB

safety

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#include <bits/stdc++.h>
using namespace std;
#define ll long long
int main(){
    ll n,h;
    cin>>n>>h;
    ll a[n+1];
    for(int i=1;i<=n;i++){
        cin>>a[i];
    }
    set<ll> s1,s2;
    s1.insert(-1e9);
    s2.insert(1e9);
    ll m=0,x1=0,x2=0;
    for(int i=1;i<=n;i++){
        x1-=h;
        x2+=h;
        ll c=*s1.rbegin()+x1;
        if(a[i]>=c){
            s2.insert(a[i]-x2);
        }else{
            m+=c-a[i];
            s1.insert(a[i]-x1);
            s2.insert(c-x2);
        }
        c=*s2.begin()+x2;
        if(a[i]<=c){
            s1.insert(a[i]-x1);
 
 
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