Submission #416994

#	Time	Username	Problem	Language	Result	Execution time	Memory
416994		yuto1115	Roller Coaster Railroad (IOI16_railroad)	C++17	34 / 100	54 ms	11072 KiB

railroad

#include "railroad.h"
#include <bits/stdc++.h>
#define rep(i, n) for(ll i = 0; i < ll(n); i++)
#define rep2(i, s, n) for(ll i = ll(s); i < ll(n); i++)
#define rrep(i, n) for(ll i = ll(n)-1; i >= 0; i--)
#define pb push_back
#define eb emplace_back
#define all(a) a.begin(),a.end()
#define rall(a) a.rbegin(),a.rend()
using namespace std;
using ll = long long;
using P = pair<int, int>;
using vi = vector<int>;
using vvi = vector<vi>;
using vl = vector<ll>;
using vvl = vector<vl>;
using vp = vector<P>;
using vvp = vector<vp>;
using vb = vector<bool>;
using vvb = vector<vb>;
using vs = vector<string>;

template<class T>
bool chmin(T &a, T b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}

template<class T>
bool chmax(T &a, T b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}

const int inf = 1001001001;
const ll linf = 1001001001001001001;

ll plan_roller_coaster(vi s, vi t) {
    int n = s.size();
    assert(n <= 16);
    vvl dp(1 << n, vl(n, linf));
    rep(i, n) dp[1 << i][i] = 0;
    rep(i, 1 << n) rep(j, n) {
            if (~i >> j & 1) continue;
            rep(k, n) {
                if (i >> k & 1) continue;
                chmin(dp[i | 1 << k][k], dp[i][j] + max(0, t[j] - s[k]));
            }
        }
    ll ans = linf;
    rep(i, n) chmin(ans, dp[(1 << n) - 1][i]);
    return ans;
}

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