Submission #110524

#	Time	Username	Problem	Language	Result	Execution time	Memory
110524		Mamnoon_Siam	Roller Coaster Railroad (IOI16_railroad)	C++17	34 / 100	164 ms	27256 KiB

railroad

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

using ll = long long;

ll dp[17][1 << 16];
int n;
vector<int> s, t;

ll f(int u, int mask) {
	if(mask == (1 << n) - 1) return 0;
	ll &ret = dp[u][mask];
	if(ret != -1) return ret;
	ret = LLONG_MAX;
	for(int i = 0; i < n; i++) if(mask & (1 << i)) {} else {
		ret = min(ret, max(0, t[u] - s[i]) + f(i, mask | (1 << i)));
	}
	return ret;
}

ll plan_roller_coaster(vector<int> _s, vector<int> _t) {
	s = _s, t = _t;
    n = (int) s.size();
    memset(dp, -1, sizeof dp);
    ll ret = LLONG_MAX;
    for(int i = 0; i < n; i++) {
    	ret = min(ret, f(i, 1 << i));
    }
    return ret;
}

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