Submission #282404

#	Time	Username	Problem	Language	Result	Execution time	Memory
282404		groeneprof	Roller Coaster Railroad (IOI16_railroad)	C++14	34 / 100	80 ms	10616 KiB

railroad

#include "railroad.h"
#include <bits/stdc++.h>
#define int long long
#define P(a) do{if(debug) cout<<a<<endl;} while(false)
#define H(a) P(#a<<": "<<a)
#define FR(i,a,b) for(int i = (a); i<(b); i++)
#define F(i,n) FR(i,0,n)

const int debug = 1;
const int inf = 1e18;
using namespace std;

bool f(int a, int b){
	return (a&(1<<b)) != 0;
}

int n;
int dp[(1<<17)][17];

long long plan_roller_coaster(vector<signed> s, vector<signed> t) {
	n = (int) s.size();
	FR(i,1,1<<n) F(j, n) if(f(i,j)){
		dp[i][j] = inf;
		bool bol = true;
		F(k,n) if(k!=j && f(i,k)){
			bol = false;
			dp[i][j] = min(dp[i][j], dp[i-(1<<j)][k] + max(0, t[k] - s[j]));
		}
		if(bol){
			dp[i][j] = 0;
		}
		/*F(k,n){
			cout<<f(i,k);
		}
		cout<<" "<<j<<": "<<dp[i][j]<<endl;*/
	}
	int ans = inf;
	F(i,n){
		ans = min(ans, dp[(1<<n)-1][i]);
	}
	return ans;
}

• Subtask 1: 11 / 11
• Subtask 2: 23 / 23
• Subtask 3: 0 / 30
• Subtask 4: 0 / 36