Submission #636822

#	Time	Username	Problem	Language	Result	Execution time	Memory
636822		tabr	Roller Coaster Railroad (IOI16_railroad)	C++17	34 / 100	48 ms	13876 KiB

railroad

#include <bits/stdc++.h>
using namespace std;
#ifdef tabr
#include "library/debug.cpp"
#else
#define debug(...)
#endif

long long plan_roller_coaster(vector<int> s, vector<int> t) {
    int n = (int) s.size();
    const long long inf = (long long) 1e18;
    vector<vector<long long>> dp(1 << n, vector<long long>(n, inf));
    for (int i = 0; i < n; i++) {
        dp[1 << i][i] = 0;
    }
    for (int mask = 1; mask < (1 << n); mask++) {
        for (int i = 0; i < n; i++) {
            if (~mask & (1 << i)) {
                continue;
            }
            for (int j = 0; j < n; j++) {
                if (mask & (1 << j)) {
                    continue;
                }
                int nmask = mask | (1 << j);
                dp[nmask][j] = min(dp[nmask][j], dp[mask][i] + max(0, t[i] - s[j]));
            }
        }
    }
    return *min_element(dp.back().begin(), dp.back().end());
}

#ifdef tabr
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    debug(plan_roller_coaster({1, 4, 5, 6}, {7, 3, 8, 6}));
    return 0;
}
#endif

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