Submission #1199421

#	Time	Username	Problem	Language	Result	Execution time	Memory
1199421		raphaelp	Roller Coaster Railroad (IOI16_railroad)	C++20	34 / 100	36 ms	9624 KiB

railroad

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

long long plan_roller_coaster(vector<int> s, vector<int> t)
{
    int N = (int)s.size();
    vector<vector<long long>> dp(N + 1, vector<long long>((1 << N), 100000000000000000));
    dp[0][0] = 0;
    long long best = 100000000000000000;
    for (int mask = 0; mask < (1 << N); mask++)
    {
        for (int i = 0; i <= N; i++)
        {
            if (dp[i][mask] == 100000000000000000)
                continue;
            if (mask == (1 << N) - 1)
                best = min(best, dp[i][mask]);
            int speed = 1;
            if (i > 0)
                speed = t[i - 1];
            for (int j = 0; j < N; j++)
            {
                if (mask & (1 << j))
                    continue;
                dp[j + 1][mask | (1 << j)] = min(dp[j + 1][mask | (1 << j)], dp[i][mask] + max(0, speed - s[j]));
            }
        }
    }
    return best;
}

Compilation message (stderr)

railroad.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
railroad_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~

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