Submission #574476

#	Time	Username	Problem	Language	Result	Execution time	Memory
574476		Elias	Roller Coaster Railroad (IOI16_railroad)	C++17	34 / 100	50 ms	11084 KiB

railroad

#include <bits/stdc++.h>

#ifndef _DEBUG
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx")
#include "railroad.h"
#endif

using namespace std;

long long plan_roller_coaster(vector<int> s, vector<int> t)
{
    int n = s.size();

    vector<vector<int64_t>> dp((1 << n) + 1, vector<int64_t>(n, 1e16));
    dp[0][0] = 0;
    for (int i = 0; i < n; i++)
    {
        dp[1 << i][i] = 0;
    }

    for (int bits = 1; bits < (1 << n) + 1; bits++)
        for (int i = 0; i < n; i++)
        {
            if (!(bits & (1 << i)))
                continue;

            for (int j = 0; j < n; j++)
            {
                if (i == j || !(bits & (1 << j)))
                    continue;

                dp[bits][i] = min(dp[bits][i], dp[bits ^ (1 << i)][j] + max(t[j] - s[i], 0));
            }
        }

    return *min_element(dp[(1 << n) - 1].begin(), dp[(1 << n) - 1].end());
}

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