Submission #1161773

#	Time	Username	Problem	Language	Result	Execution time	Memory
1161773		irmuun	Ski 2 (JOI24_ski2)	C++20	5 / 100	6 ms	328 KiB

Main

#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()

int main(){
	ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
	ll n,k;
	cin>>n>>k;
	ll h[n+5],c[n+5];
	for(ll i=1;i<=n;i++){
		cin>>h[i]>>c[i];
	}
	ll ans=(ll)1e18;
	ll a[n+5];
	for(ll i=1;i<=n;i++){
		ll cost=0;
		for(ll j=1;j<=n;j++) a[j]=h[j];
		for(ll j=1;j<=n;j++){
			if(i!=j){
				cost+=(max(a[i]+1,a[j])-a[j])*k;
				a[j]=max(a[i]+1,a[j]);
			}
		}
		ll ord[n+5];
		iota(ord+1,ord+n+1,1);
		sort(ord+1,ord+n+1,[&](ll i,ll j){
			return a[i]<a[j];
		});
		ll cnt[n+5];
		fill(cnt,cnt+n+1,1);
		for(ll j=2;j<=n;j++){
			bool flag=false;
			for(ll l=1;l<j;l++){
				if(a[ord[l]]==a[ord[j]]) break;
				if(cnt[ord[l]]==1){
					cnt[ord[l]]=0;
					flag=true;
					break;
				}
			}
			if(!flag){
				ll C=(ll)1e18;
				for(ll l=1;l<j;l++){
					if(a[ord[l]]==a[ord[j]]) break;
					C=min(C,c[ord[l]]);
				}
				cost+=C;
			}
		}
		ans=min(ans,cost);
	}
	cout<<ans;
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 12
• Subtask 3: 0 / 9
• Subtask 4: 0 / 33
• Subtask 5: 0 / 27
• Subtask 6: 0 / 14