# | TimeUTC-0 | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1136312 | alterio | Roller Coaster Railroad (IOI16_railroad) | C++20 | 59 ms | 13380 KiB |
#include "railroad.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int mxn = 16;
int n;
vector<int> s, t;
ll dp[mxn][1 << mxn];
ll solve(int last, int mask) {
if (mask == (1 << n) - 1) return 0;
if (dp[last][mask] != -1) return dp[last][mask];
ll ans = 1e15;
for (int i = 0; i < n; i++) {
if ((1 << i) & mask) continue;
ans = min(ans, max(0, t[last] - s[i]) + solve(i, mask | (1 << i)));
}
return dp[last][mask] = ans;
}
ll plan_roller_coaster(vector<int> _s, vector<int> _t) {
s = _s;
t = _t;
n = s.size();
memset(dp, -1, sizeof(dp));
ll ans = 1e15;
Compilation message (stderr)
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