Submission #98222

#	Time	Username	Problem	Language	Result	Execution time	Memory
98222		SuperJava	Salesman (IOI09_salesman)	C++17	13 / 100	1076 ms	20136 KiB

salesman

//fold
#ifndef KHALIL
#include <bits/stdc++.h>
#else
#include "header.h"
#endif
#define endl '\n'
#define mp make_pair
#define tostr(x) static_cast<ostringstream&>((ostringstream()<<dec<<x)).str()
#define rep(i,begin,end) for(auto i = begin;i < end;i++)
#define repr(i,begin,end) for(auto i = begin-1;i >= end;i--)
#define pb push_back
#define sz(a) ((int)(a).size())
#define fi first
#define se second
#define abs(a) ((a) < (0) ? (-1)*(a) : (a))
#define SQ(a) ((a)*(a))
#define eqd(a,b) (abs(a-b)<1e-9)
#define X real()
#define Y imag()
using namespace std;
typedef long long ll;
typedef long double ld;
template <typename t> t in(t q){cin >> q;return q;}
template <typename T> ostream& operator<<(ostream& os, const vector<T>& v){os << "[";for (int i = 0; i < sz(v); ++i) { os << v[i]; if (i != sz(v) - 1) os << ",";}os << "]";return os;}
template <typename T, typename S>ostream& operator<<(ostream& os, const map<T, S>& v){for (auto it : v)os << "(" << it.first << ":" << it.second << ")";return os;}
template <typename T, typename S>ostream& operator<<(ostream& os, const pair<T, S>& v){os << "(" << v.first << "," << v.second << ")";return os;}
const long double PI = acosl(-1);
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rng64(chrono::steady_clock::now().time_since_epoch().count());
inline int rand(int l,int r){return uniform_int_distribution<int>(l, r)(rng);}
inline ll rand(ll l,ll r){return uniform_int_distribution<ll>(l, r)(rng);}
//endfold
#define  N  (500005)
#define MOD (1000000000l + 7l)
#define OO (1050000000)
#define OOL (1100000000000000000)

struct fair{
	ll day,loc,mon;
};

vector<fair> a;
// i, l
ll dp[2][N];

int main(){
	//fold
	ios::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	cout << setprecision(10);
	//endfold
	ll n,u,d,s;
	cin >> n >> u >> d >> s;
	ll mx = 0,mn = OO;
	for (int i = 0; i < n; ++i){
		ll t,l,m;
		cin >> t >> l >> m;
		mx = max(mx,l);
		mn = min(mn,l);
		a.push_back({t,l,m});
	}
	sort(a.begin(), a.end(),[](fair a,fair b){
		return a.day < b.day;
	});
	for (int i = mn; i < s; ++i){
		dp[1][i] = -(s-i)*d;
	}
	for (int i = s+1; i <= mx; ++i){
		dp[1][i] = -(i-s)*u;
	}
	for (int i = n-1; i >= 0; --i){
		for (int l = mn; l <= mx; ++l){
			int dist = 0;
			if(l < a[i].loc) dist = (a[i].loc-l)*d;
			else dist = (l-a[i].loc)*u;
			dp[0][l] = max(dp[1][l],a[i].mon+dp[1][a[i].loc]-dist);
		}
		for (int l = mn; l <= mx; ++l){
			dp[1][l] = dp[0][l];
		}
	}
	cout << dp[0][s];
	return 0;
}

• Subtask 1: 13 / 100