Submission #1266410

#	Time	Username	Problem	Language	Result	Execution time	Memory
1266410		thelegendary08	Ski 2 (JOI24_ski2)	C++17	100 / 100	192 ms	217236 KiB

Main

#include<bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define int long long
#define vi vector<int>
#define vvi vector<vector<int>>
#define pii pair<int, int>
#define vpii vector<pair<int, int>>
#define vc vector<char>
#define vb vector<bool>
#define mii map<int,int>
#define f0r(i,n) for(int i=0;i<n;i++)
#define FOR(i,k,n) for(int i=k;i<n;i++)
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define in(a) int a; cin>>a
#define in2(a,b) int a,b; cin>>a>>b
#define in3(a,b,c) int a,b,c; cin>>a>>b>>c
#define in4(a,b,c,d) int a,b,c,d; cin>>a>>b>>c>>d
#define vin(v,n); vi v(n); f0r(i,n){cin>>v[i];}
#define out(a) cout<<a<<'\n'
#define out2(a,b) cout<<a<<' '<<b<<'\n'
#define out3(a,b,c) cout<<a<<' '<<b<<' '<<c<<'\n'
#define out4(a,b,c,d) cout<<a<<' '<<b<<' '<<c<<' '<<d<<'\n'
#define pout(a) cout<<a.first<<' '<<a.second<<'\n'
#define vout(v) for(auto u : v){cout<<u<<' ';} cout<<endl
#define dout(a) cout<<a<<' '<<#a<<endl
#define dout2(a,b) cout<<a<<' '<<#a<<' '<<b<<' '<<#b<<endl
#define yn(x); if(x){cout<<"YES"<<'\n';}else{cout<<"NO"<<'\n';}
const int leg = 1e9 + 7;
const int mod = 998244353;
using namespace std;
const int mxn = 305; 
int n, K, h[mxn], c[mxn], cnt[mxn], dp[mxn][mxn][mxn], lsh[mxn], cst[mxn]; 
signed main(){
	ios::sync_with_stdio(false); cin.tie(NULL);
	cin>>n>>K;
	f0r(i,n){ cin>>h[i]>>c[i]; lsh[i] = h[i]; } sort(lsh, lsh + n);
	FOR(i,1,n)lsh[i] = max(lsh[i-1] + 1, lsh[i]); //lsh[i] decompresses i 
	f0r(i,n)h[i] = lower_bound(lsh, lsh + n, h[i]) - lsh; 
	f0r(i,n)cst[i] = 4e18; f0r(i,n)cst[h[i]] = min(cst[h[i]], c[i]); FOR(i,1,n)cst[i] = min(cst[i], cst[i-1]);
	f0r(i,n)cnt[h[i]]++; 
	f0r(i,n)f0r(j,n+1)f0r(k,n+1)dp[i][j][k] = 1e15; dp[0][1][cnt[0]-1] = 0;
	f0r(i,n-1)f0r(j,n+1)f0r(k,n+1){
		int nx = k+cnt[i+1]; int muc; if(k && (lsh[i+1] - lsh[i]) * K > 1e15)muc = 1e15; else muc = k * (lsh[i+1] - lsh[i]) * K; 
		if(nx <= n){
			dp[i+1][j][nx] = min(dp[i+1][j][nx],dp[i][j][k]+muc);
			if(nx>j){
				dp[i+1][j][nx-j] = min(dp[i+1][j][nx-j],dp[i][j][k]+muc);
				if(j != n && nx-j != 0)dp[i+1][j+1][nx-j-1] = min(dp[i+1][j+1][nx-j-1], dp[i+1][j][nx-j] + cst[i]);
			}
			else dp[i+1][j][0] = min(dp[i+1][j][0], dp[i][j][k]+muc);
		}
	}
	int ans = 4e18; f0r(i, n+1)ans = min(ans, dp[n-1][i][0]); out(ans);
}

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