Submission #852984

#	Time	Username	Problem	Language	Result	Execution time	Memory
852984		waldi	Roller Coaster Railroad (IOI16_railroad)	C++17	34 / 100	40 ms	14008 KiB

railroad

#include <bits/stdc++.h>
#include "railroad.h"
#define FOR(i,p,k) for(int i=(p);i<=(k);++i)
#define REP(i,n) FOR(i,0,(n)-1)
#define inf 1000000000000000000ll
using namespace std;
typedef long long ll;

ll plan_roller_coaster(vector<int> s, vector<int> t) {
	int n = s.size();
	vector<vector<ll>> dp(1<<n, vector<ll>(n, inf));
	FOR(maska, 1, (1<<n)-1) REP(ost, n) if(maska>>ost&1){
		if(__builtin_popcount(maska) == 1) dp[maska][ost] = 0ll;
		REP(i, n) if(!(maska>>i&1)) dp[maska+(1<<i)][i] = min(dp[maska+(1<<i)][i], dp[maska][ost] + max(0, t[ost]-s[i]));
	}
	ll wyn = inf;
	REP(i, n) wyn = min(wyn, dp[(1<<n)-1][i]);
	return wyn;
}

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