Submission #563846

#	Time	Username	Problem	Language	Result	Execution time	Memory
563846		amunduzbaev	Long Distance Coach (JOI17_coach)	C++17	71 / 100	2045 ms	11252 KiB

coach

#include "bits/stdc++.h"
using namespace std;
 
#define ar array
#define int long long

const int inf = 1e18;
const int N = 2e5 + 5;
int s[N], d[N], c[N];

signed main(){
	ios::sync_with_stdio(0); cin.tie(0);
	
	int x, n, m, w, t; cin>>x>>n>>m>>w>>t;
	for(int i=0;i<n;i++) cin>>s[i];
	vector<int> p(m), d_(m), mn(m, x + 1);
	int tot = 0;
	for(int i=0;i<m;i++){
		cin>>d[i]>>c[i];
		p[i] = i;
		tot += (x / t + (d[i] < x % t)) * w;
	}
	
	tot += (x / t + 1) * w;
	
	sort(p.begin(), p.end(), [&](int i, int j){
		return d[i] < d[j];
	});
	for(int i=0;i<m;i++) d_[i] = d[p[i]];
	s[n] = x;
	for(int i=0;i<=n;i++){
		int j = upper_bound(d_.begin(), d_.end(), s[i] % t) - d_.begin();
		if(j){ --j;
			//~ assert(d_[j] != s[i] % t);
			mn[j] = min(mn[j], s[i]);
		}
	}
	
	vector<int> dp(m);
	for(int i=0;i<m;i++){
		if(i) dp[i] = dp[i-1];
		if(mn[i] > x) continue;
		int M = mn[i], cur = 0;
		for(int j=i;~j;j--){
			//~ M = min(M, mn[j]);
			cur = cur - (x / t + (d_[j] < x % t) - M / t) * w + c[p[j]];
			dp[i] = min(dp[i], (j ? dp[j-1] : 0) + cur);
		}
	}
	
	//~ cout<<dp[m-1]<<"\n";
	cout<<tot + dp[m-1]<<"\n";
}

/*

166833333456456789
333333209997456789

*/

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