Submission #733418

#	Time	Username	Problem	Language	Result	Execution time	Memory
733418		penguin133	Salesman (IOI09_salesman)	C++17	19 / 100	3069 ms	12876 KiB

salesman

#include <bits/stdc++.h>
using namespace std;

#define int long long
#define pi pair<int, int>
#define pii pair<int, pi>
#define fi first
#define se second
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
int n, u, d, s;
int dp[500005];
pii A[500005];
void solve(){
	cin >> n >> u >> d >> s;
	for(int i=1;i<=n;i++){
		cin >> A[i].fi >> A[i].se.fi >> A[i].se.se;
	}
	sort(A+1, A+n+1);
	A[0].se.fi = s;
	A[n+1].se.fi = s;
	for(int i=1;i<=n+1;i++){
		dp[i] = -1e18;
		for(int j=i-1;j>=0;j--){
			int cst;
			if(A[j].se.fi > A[i].se.fi)cst = d * (A[j].se.fi - A[i].se.fi);
			else cst = u * (A[i].se.fi - A[j].se.fi);
			dp[i] = max(dp[i], dp[j] - cst + A[i].se.se);
		}
	}
	cout << dp[n+1];
}

main(){
	ios::sync_with_stdio(0);cin.tie(0);
	int tc = 1;
	//cin >> tc;
	for(int tc1=1;tc1<=tc;tc1++){
		// cout << "Case #" << tc1 << ": ";
		solve();
	}
}

Compilation message (stderr)

salesman.cpp:36:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   36 | main(){
      | ^~~~

• Subtask 1: 19 / 100