Submission #1190046

#	Time	Username	Problem	Language	Result	Execution time	Memory
1190046		8pete8	Long Distance Coach (JOI17_coach)	C++20	71 / 100	2095 ms	10600 KiB

coach

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define f first
#define s second
#define pii pair<int,int>
#define ppii pair<int,pii>
#define vi vector<int>
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define F(n) for(int i=0;i<n;i++)
#define lb lower_bound
#define ub upper_bound
#define fastio ios::sync_with_stdio(false);cin.tie(NULL);
#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
#define sz(x) (int)((x).size())
#define int long long
using namespace std;
const int mod=1e9+7,mxn=3e5,inf=1e18,minf=-1e18,lg=30,Mxn=1e9;
//#undef int
int n,k,m,d,q,X,W,T;
void setIO(string name){
	ios_base::sync_with_stdio(0); cin.tie(0);
	freopen((name+".in").c_str(),"r",stdin);
	freopen((name+".out").c_str(),"w",stdout);
}
int S[mxn+10],D[mxn+10],C[mxn+10];
int dp[mxn+10],pref[mxn+10];
bool cmp(pii a,pii b){return a.f<b.f;}
int32_t main(){
	fastio
	cin>>X>>n>>m>>W>>T;
	for(int i=1;i<=n;i++)cin>>S[i];
	sort(S+1,S+n+1);
	vector<pii>pass(m);
	for(auto &i:pass)cin>>i.f>>i.s;
	sort(all(pass));
	for(int i=1;i<=m;i++){
		D[i]=pass[i-1].f;
		C[i]=pass[i-1].s+C[i-1];
		pref[i]=inf;
	}
	S[n+1]=X;
	for(int i=1;i<=n+1;i++){
		auto it=upper_bound(all(pass),make_pair(S[i]%T,0),cmp)-pass.begin()-1;
		if(it<0||(pass[it]).f>(S[i]%T))continue;
		pref[it+1]=min(pref[it+1],S[i]);
	}
	dp[0]=W*(1+(X/T));
	for(int i=1;i<=m;i++){
		dp[i]=dp[i-1]+(W*(1+((X-D[i])/T)));
		if(pref[i]==inf)continue;
		for(int j=1;j<=i;j++){
			dp[i]=min(dp[i],dp[j-1]+C[i]-C[j-1]+(i-j+1)*(W*((pref[i]/T))));
		}
	}
	cout<<dp[m];
}
/*
*/

Compilation message (stderr)

coach.cpp: In function 'void setIO(std::string)':
coach.cpp:27:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |         freopen((name+".in").c_str(),"r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
coach.cpp:28:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |         freopen((name+".out").c_str(),"w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 16 / 16
• Subtask 2: 30 / 30
• Subtask 3: 25 / 25
• Subtask 4: 0 / 29