Submission #937146

#	Time	Username	Problem	Language	Result	Execution time	Memory
937146		ThegeekKnight16	Roller Coaster Railroad (IOI16_railroad)	C++17	34 / 100	41 ms	13904 KiB

railroad

#include <bits/stdc++.h>
#include "railroad.h"
using namespace std;
typedef long long ll;
const ll INF = 0x3f3f3f3f3f3f3f3f;

ll plan_roller_coaster(std::vector<int> s, std::vector<int> t)
{
    int N = s.size();
    vector<vector<ll>> dp((1 << N), vector<ll>(N));

    for (int mask = 1; mask < (1 << N); mask++)
    {
        if (__builtin_popcount(mask) == 1) continue;
        for (int v = 0; v < N; v++)
        {
            if (!(mask & (1 << v))) continue;
            dp[mask][v] = INF;
            for (int v2 = 0; v2 < N; v2++)
            {
                if (v2 == v || !(mask & (1 << v2))) continue;
                dp[mask][v] = min(dp[mask][v], dp[mask-(1 << v)][v2] + max(0LL, (ll)t[v2] - (ll)s[v]));
            }
        }
    }

    return *min_element(dp.back().begin(), dp.back().end());
}

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